January, 1979 | 1.55 | 0 | Dollars per Thousand Cubic Feet |
February, 1979 | 1.65 | + 0.1 | Dollars per Thousand Cubic Feet |
March, 1979 | 1.69 | + 0.04 | Dollars per Thousand Cubic Feet |
April, 1979 | 1.7 | + 0.01 | Dollars per Thousand Cubic Feet |
May, 1979 | 1.82 | + 0.12 | Dollars per Thousand Cubic Feet |
June, 1979 | 1.84 | + 0.02 | Dollars per Thousand Cubic Feet |
July, 1979 | 1.84 | 0 | Dollars per Thousand Cubic Feet |
August, 1979 | 1.87 | + 0.03 | Dollars per Thousand Cubic Feet |
September, 1979 | 1.89 | + 0.02 | Dollars per Thousand Cubic Feet |
October, 1979 | 1.96 | + 0.07 | Dollars per Thousand Cubic Feet |
November, 1979 | 1.87 | -0.09 | Dollars per Thousand Cubic Feet |
December, 1979 | 1.9 | + 0.03 | Dollars per Thousand Cubic Feet |
January, 1980 | 2 | + 0.1 | Dollars per Thousand Cubic Feet |
February, 1980 | 2.1 | + 0.1 | Dollars per Thousand Cubic Feet |
March, 1980 | 2.13 | + 0.03 | Dollars per Thousand Cubic Feet |
April, 1980 | 2.09 | -0.04 | Dollars per Thousand Cubic Feet |
May, 1980 | 2.17 | + 0.08 | Dollars per Thousand Cubic Feet |
June, 1980 | 2.15 | -0.02 | Dollars per Thousand Cubic Feet |
July, 1980 | 2.36 | + 0.21 | Dollars per Thousand Cubic Feet |
August, 1980 | 2.45 | + 0.09 | Dollars per Thousand Cubic Feet |
September, 1980 | 2.45 | 0 | Dollars per Thousand Cubic Feet |
October, 1980 | 2.52 | + 0.07 | Dollars per Thousand Cubic Feet |
November, 1980 | 2.37 | -0.15 | Dollars per Thousand Cubic Feet |
December, 1980 | 2.31 | -0.06 | Dollars per Thousand Cubic Feet |
January, 1981 | 2.51 | + 0.2 | Dollars per Thousand Cubic Feet |
February, 1981 | 2.67 | + 0.16 | Dollars per Thousand Cubic Feet |
March, 1981 | 2.71 | + 0.04 | Dollars per Thousand Cubic Feet |
April, 1981 | 2.81 | + 0.1 | Dollars per Thousand Cubic Feet |
May, 1981 | 2.92 | + 0.11 | Dollars per Thousand Cubic Feet |
June, 1981 | 2.95 | + 0.03 | Dollars per Thousand Cubic Feet |
July, 1981 | 2.97 | + 0.02 | Dollars per Thousand Cubic Feet |
August, 1981 | 2.99 | + 0.02 | Dollars per Thousand Cubic Feet |
September, 1981 | 2.95 | -0.04 | Dollars per Thousand Cubic Feet |
October, 1981 | 3.07 | + 0.12 | Dollars per Thousand Cubic Feet |
November, 1981 | 3.07 | 0 | Dollars per Thousand Cubic Feet |
December, 1981 | 2.97 | -0.1 | Dollars per Thousand Cubic Feet |
January, 1982 | 3.07 | + 0.1 | Dollars per Thousand Cubic Feet |
February, 1982 | 3.18 | + 0.11 | Dollars per Thousand Cubic Feet |
March, 1982 | 3.25 | + 0.07 | Dollars per Thousand Cubic Feet |
April, 1982 | 3.32 | + 0.07 | Dollars per Thousand Cubic Feet |
May, 1982 | 3.42 | + 0.1 | Dollars per Thousand Cubic Feet |
June, 1982 | 3.57 | + 0.15 | Dollars per Thousand Cubic Feet |
July, 1982 | 3.69 | + 0.12 | Dollars per Thousand Cubic Feet |
August, 1982 | 3.67 | -0.02 | Dollars per Thousand Cubic Feet |
September, 1982 | 3.67 | 0 | Dollars per Thousand Cubic Feet |
October, 1982 | 3.68 | + 0.01 | Dollars per Thousand Cubic Feet |
November, 1982 | 3.61 | -0.07 | Dollars per Thousand Cubic Feet |
December, 1982 | 3.64 | + 0.03 | Dollars per Thousand Cubic Feet |
January, 1983 | 3.57 | -0.07 | Dollars per Thousand Cubic Feet |
February, 1983 | 3.41 | -0.16 | Dollars per Thousand Cubic Feet |
March, 1983 | 3.45 | + 0.04 | Dollars per Thousand Cubic Feet |
April, 1983 | 3.35 | -0.1 | Dollars per Thousand Cubic Feet |
May, 1983 | 3.55 | + 0.2 | Dollars per Thousand Cubic Feet |
June, 1983 | 3.58 | + 0.03 | Dollars per Thousand Cubic Feet |
July, 1983 | 3.72 | + 0.14 | Dollars per Thousand Cubic Feet |
August, 1983 | 3.75 | + 0.03 | Dollars per Thousand Cubic Feet |
September, 1983 | 3.7 | -0.05 | Dollars per Thousand Cubic Feet |
October, 1983 | 3.62 | -0.08 | Dollars per Thousand Cubic Feet |
November, 1983 | 3.54 | -0.08 | Dollars per Thousand Cubic Feet |
December, 1983 | 3.49 | -0.05 | Dollars per Thousand Cubic Feet |
January, 1984 | 3.49 | 0 | Dollars per Thousand Cubic Feet |
February, 1984 | 3.55 | + 0.06 | Dollars per Thousand Cubic Feet |
March, 1984 | 3.47 | -0.08 | Dollars per Thousand Cubic Feet |
April, 1984 | 3.53 | + 0.06 | Dollars per Thousand Cubic Feet |
May, 1984 | 3.72 | + 0.19 | Dollars per Thousand Cubic Feet |
June, 1984 | 3.73 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
July, 1984 | 3.86 | + 0.13 | Dollars per Thousand Cubic Feet |
August, 1984 | 3.8 | -0.06 | Dollars per Thousand Cubic Feet |
September, 1984 | 3.8 | 0 | Dollars per Thousand Cubic Feet |
October, 1984 | 3.72 | -0.08 | Dollars per Thousand Cubic Feet |
November, 1984 | 3.72 | 0 | Dollars per Thousand Cubic Feet |
December, 1984 | 3.69 | -0.03 | Dollars per Thousand Cubic Feet |
January, 1985 | 3.74 | + 0.05 | Dollars per Thousand Cubic Feet |
February, 1985 | 3.68 | -0.06 | Dollars per Thousand Cubic Feet |
March, 1985 | 3.74 | + 0.06 | Dollars per Thousand Cubic Feet |
April, 1985 | 3.72 | -0.02 | Dollars per Thousand Cubic Feet |
May, 1985 | 3.57 | -0.15 | Dollars per Thousand Cubic Feet |
June, 1985 | 3.56 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
July, 1985 | 3.56 | 0 | Dollars per Thousand Cubic Feet |
August, 1985 | 3.46 | -0.1 | Dollars per Thousand Cubic Feet |
September, 1985 | 3.4 | -0.06 | Dollars per Thousand Cubic Feet |
October, 1985 | 3.37 | -0.03 | Dollars per Thousand Cubic Feet |
November, 1985 | 3.38 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
December, 1985 | 3.29 | -0.09 | Dollars per Thousand Cubic Feet |
January, 1986 | 3.2 | -0.09 | Dollars per Thousand Cubic Feet |
February, 1986 | 2.85 | -0.35 | Dollars per Thousand Cubic Feet |
March, 1986 | 2.6 | -0.25 | Dollars per Thousand Cubic Feet |
April, 1986 | 2.44 | -0.16 | Dollars per Thousand Cubic Feet |
May, 1986 | 2.41 | -0.03 | Dollars per Thousand Cubic Feet |
June, 1986 | 2.27 | -0.14 | Dollars per Thousand Cubic Feet |
July, 1986 | 2.23 | -0.04 | Dollars per Thousand Cubic Feet |
August, 1986 | 2.22 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
September, 1986 | 2.22 | 0 | Dollars per Thousand Cubic Feet |
October, 1986 | 2.19 | -0.03 | Dollars per Thousand Cubic Feet |
November, 1986 | 2.23 | + 0.04 | Dollars per Thousand Cubic Feet |
December, 1986 | 2.35 | + 0.12 | Dollars per Thousand Cubic Feet |
January, 1987 | 2.44 | + 0.09 | Dollars per Thousand Cubic Feet |
February, 1987 | 2.46 | + 0.02 | Dollars per Thousand Cubic Feet |
March, 1987 | 2.4 | -0.06 | Dollars per Thousand Cubic Feet |
April, 1987 | 2.38 | -0.02 | Dollars per Thousand Cubic Feet |
May, 1987 | 2.31 | -0.07 | Dollars per Thousand Cubic Feet |
June, 1987 | 2.3 | -0.01 | Dollars per Thousand Cubic Feet |
July, 1987 | 2.33 | + 0.03 | Dollars per Thousand Cubic Feet |
August, 1987 | 2.26 | -0.07 | Dollars per Thousand Cubic Feet |
September, 1987 | 2.19 | -0.07 | Dollars per Thousand Cubic Feet |
October, 1987 | 2.26 | + 0.07 | Dollars per Thousand Cubic Feet |
November, 1987 | 2.28 | + 0.02 | Dollars per Thousand Cubic Feet |
December, 1987 | 2.53 | + 0.25 | Dollars per Thousand Cubic Feet |
January, 1988 | 2.6 | + 0.07 | Dollars per Thousand Cubic Feet |
February, 1988 | 2.56 | -0.04 | Dollars per Thousand Cubic Feet |
March, 1988 | 2.32 | -0.24 | Dollars per Thousand Cubic Feet |
April, 1988 | 2.2 | -0.12 | Dollars per Thousand Cubic Feet |
May, 1988 | 2.1 | -0.1 | Dollars per Thousand Cubic Feet |
June, 1988 | 2.16 | + 0.06 | Dollars per Thousand Cubic Feet |
July, 1988 | 2.23 | + 0.07 | Dollars per Thousand Cubic Feet |
August, 1988 | 2.36 | + 0.13 | Dollars per Thousand Cubic Feet |
September, 1988 | 2.36 | 0 | Dollars per Thousand Cubic Feet |
October, 1988 | 2.4 | + 0.04 | Dollars per Thousand Cubic Feet |
November, 1988 | 2.58 | + 0.18 | Dollars per Thousand Cubic Feet |
December, 1988 | 2.57 | -0.01 | Dollars per Thousand Cubic Feet |
January, 1989 | 2.63 | + 0.06 | Dollars per Thousand Cubic Feet |
February, 1989 | 2.44 | -0.19 | Dollars per Thousand Cubic Feet |
March, 1989 | 2.32 | -0.12 | Dollars per Thousand Cubic Feet |
April, 1989 | 2.31 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
May, 1989 | 2.39 | + 0.08 | Dollars per Thousand Cubic Feet |
June, 1989 | 2.4 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
July, 1989 | 2.4 | 0 | Dollars per Thousand Cubic Feet |
August, 1989 | 2.38 | -0.02 | Dollars per Thousand Cubic Feet |
September, 1989 | 2.33 | -0.05 | Dollars per Thousand Cubic Feet |
October, 1989 | 2.39 | + 0.06 | Dollars per Thousand Cubic Feet |
November, 1989 | 2.56 | + 0.17 | Dollars per Thousand Cubic Feet |
December, 1989 | 2.85 | + 0.29 | Dollars per Thousand Cubic Feet |
January, 1990 | 3 | + 0.15 | Dollars per Thousand Cubic Feet |
February, 1990 | 2.76 | -0.24 | Dollars per Thousand Cubic Feet |
March, 1990 | 2.37 | -0.39 | Dollars per Thousand Cubic Feet |
April, 1990 | 2.28 | -0.09 | Dollars per Thousand Cubic Feet |
May, 1990 | 2.18 | -0.1 | Dollars per Thousand Cubic Feet |
June, 1990 | 2.16 | -0.02 | Dollars per Thousand Cubic Feet |
July, 1990 | 2.21 | + 0.05 | Dollars per Thousand Cubic Feet |
August, 1990 | 2.23 | + 0.02 | Dollars per Thousand Cubic Feet |
September, 1990 | 2.21 | -0.02 | Dollars per Thousand Cubic Feet |
October, 1990 | 2.45 | + 0.24 | Dollars per Thousand Cubic Feet |
November, 1990 | 2.79 | + 0.34 | Dollars per Thousand Cubic Feet |
December, 1990 | 2.89 | + 0.1 | Dollars per Thousand Cubic Feet |
January, 1991 | 2.7 | -0.19 | Dollars per Thousand Cubic Feet |
February, 1991 | 2.35 | -0.35 | Dollars per Thousand Cubic Feet |
March, 1991 | 2.21 | -0.14 | Dollars per Thousand Cubic Feet |
April, 1991 | 2.1 | -0.11 | Dollars per Thousand Cubic Feet |
May, 1991 | 2.01 | -0.09 | Dollars per Thousand Cubic Feet |
June, 1991 | 1.94 | -0.07 | Dollars per Thousand Cubic Feet |
July, 1991 | 1.88 | -0.06 | Dollars per Thousand Cubic Feet |
August, 1991 | 1.96 | + 0.08 | Dollars per Thousand Cubic Feet |
September, 1991 | 2.19 | + 0.23 | Dollars per Thousand Cubic Feet |
October, 1991 | 2.35 | + 0.16 | Dollars per Thousand Cubic Feet |
November, 1991 | 2.43 | + 0.08 | Dollars per Thousand Cubic Feet |
December, 1991 | 2.64 | + 0.21 | Dollars per Thousand Cubic Feet |
January, 1992 | 2.49 | -0.15 | Dollars per Thousand Cubic Feet |
February, 1992 | 2.03 | -0.46 | Dollars per Thousand Cubic Feet |
March, 1992 | 1.99 | -0.04 | Dollars per Thousand Cubic Feet |
April, 1992 | 2.07 | + 0.08 | Dollars per Thousand Cubic Feet |
May, 1992 | 2.11 | + 0.04 | Dollars per Thousand Cubic Feet |
June, 1992 | 2.18 | + 0.07 | Dollars per Thousand Cubic Feet |
July, 1992 | 2.13 | -0.05 | Dollars per Thousand Cubic Feet |
August, 1992 | 2.42 | + 0.29 | Dollars per Thousand Cubic Feet |
September, 1992 | 2.51 | + 0.09 | Dollars per Thousand Cubic Feet |
October, 1992 | 3.04 | + 0.53 | Dollars per Thousand Cubic Feet |
November, 1992 | 2.87 | -0.17 | Dollars per Thousand Cubic Feet |
December, 1992 | 2.81 | -0.06 | Dollars per Thousand Cubic Feet |
January, 1993 | 2.7 | -0.11 | Dollars per Thousand Cubic Feet |
February, 1993 | 2.54 | -0.16 | Dollars per Thousand Cubic Feet |
March, 1993 | 2.61 | + 0.07 | Dollars per Thousand Cubic Feet |
April, 1993 | 2.75 | + 0.14 | Dollars per Thousand Cubic Feet |
May, 1993 | 2.9 | + 0.15 | Dollars per Thousand Cubic Feet |
June, 1993 | 2.48 | -0.42 | Dollars per Thousand Cubic Feet |
July, 1993 | 2.45 | -0.03 | Dollars per Thousand Cubic Feet |
August, 1993 | 2.6 | + 0.15 | Dollars per Thousand Cubic Feet |
September, 1993 | 2.69 | + 0.09 | Dollars per Thousand Cubic Feet |
October, 1993 | 2.45 | -0.24 | Dollars per Thousand Cubic Feet |
November, 1993 | 2.59 | + 0.14 | Dollars per Thousand Cubic Feet |
December, 1993 | 2.76 | + 0.17 | Dollars per Thousand Cubic Feet |
January, 1994 | 2.67 | -0.09 | Dollars per Thousand Cubic Feet |
February, 1994 | 2.8 | + 0.13 | Dollars per Thousand Cubic Feet |
March, 1994 | 2.67 | -0.13 | Dollars per Thousand Cubic Feet |
April, 1994 | 2.44 | -0.23 | Dollars per Thousand Cubic Feet |
May, 1994 | 2.46 | + 0.02 | Dollars per Thousand Cubic Feet |
June, 1994 | 2.25 | -0.21 | Dollars per Thousand Cubic Feet |
July, 1994 | 2.27 | + 0.02 | Dollars per Thousand Cubic Feet |
August, 1994 | 2.16 | -0.11 | Dollars per Thousand Cubic Feet |
September, 1994 | 2 | -0.16 | Dollars per Thousand Cubic Feet |
October, 1994 | 1.95 | -0.05 | Dollars per Thousand Cubic Feet |
November, 1994 | 2.1 | + 0.15 | Dollars per Thousand Cubic Feet |
December, 1994 | 2.17 | + 0.07 | Dollars per Thousand Cubic Feet |
January, 1995 | 2.13 | -0.04 | Dollars per Thousand Cubic Feet |
February, 1995 | 2 | -0.13 | Dollars per Thousand Cubic Feet |
March, 1995 | 1.92 | -0.08 | Dollars per Thousand Cubic Feet |
April, 1995 | 1.97 | + 0.05 | Dollars per Thousand Cubic Feet |
May, 1995 | 2.06 | + 0.09 | Dollars per Thousand Cubic Feet |
June, 1995 | 2.06 | 0 | Dollars per Thousand Cubic Feet |
July, 1995 | 1.9 | -0.16 | Dollars per Thousand Cubic Feet |
August, 1995 | 1.84 | -0.06 | Dollars per Thousand Cubic Feet |
September, 1995 | 1.95 | + 0.11 | Dollars per Thousand Cubic Feet |
October, 1995 | 2.09 | + 0.14 | Dollars per Thousand Cubic Feet |
November, 1995 | 2.22 | + 0.13 | Dollars per Thousand Cubic Feet |
December, 1995 | 2.58 | + 0.36 | Dollars per Thousand Cubic Feet |
January, 1996 | 2.87 | + 0.29 | Dollars per Thousand Cubic Feet |
February, 1996 | 3.07 | + 0.2 | Dollars per Thousand Cubic Feet |
March, 1996 | 2.73 | -0.34 | Dollars per Thousand Cubic Feet |
April, 1996 | 2.68 | -0.05 | Dollars per Thousand Cubic Feet |
May, 1996 | 2.52 | -0.16 | Dollars per Thousand Cubic Feet |
June, 1996 | 2.59 | + 0.07 | Dollars per Thousand Cubic Feet |
July, 1996 | 2.69 | + 0.1 | Dollars per Thousand Cubic Feet |
August, 1996 | 2.57 | -0.12 | Dollars per Thousand Cubic Feet |
September, 1996 | 2.24 | -0.33 | Dollars per Thousand Cubic Feet |
October, 1996 | 2.37 | + 0.13 | Dollars per Thousand Cubic Feet |
November, 1996 | 3.04 | + 0.67 | Dollars per Thousand Cubic Feet |
December, 1996 | 3.98 | + 0.94 | Dollars per Thousand Cubic Feet |
January, 1997 | 4.06 | + 0.08 | Dollars per Thousand Cubic Feet |
February, 1997 | 2.97 | -1.09 | Dollars per Thousand Cubic Feet |
March, 1997 | 2.29 | -0.68 | Dollars per Thousand Cubic Feet |
April, 1997 | 2.3 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
May, 1997 | 2.41 | + 0.11 | Dollars per Thousand Cubic Feet |
June, 1997 | 2.52 | + 0.11 | Dollars per Thousand Cubic Feet |
July, 1997 | 2.44 | -0.08 | Dollars per Thousand Cubic Feet |
August, 1997 | 2.53 | + 0.09 | Dollars per Thousand Cubic Feet |
September, 1997 | 2.96 | + 0.43 | Dollars per Thousand Cubic Feet |
October, 1997 | 3.24 | + 0.28 | Dollars per Thousand Cubic Feet |
November, 1997 | 3.41 | + 0.17 | Dollars per Thousand Cubic Feet |
December, 1997 | 2.77 | -0.64 | Dollars per Thousand Cubic Feet |
January, 1998 | 2.64 | -0.13 | Dollars per Thousand Cubic Feet |
February, 1998 | 2.51 | -0.13 | Dollars per Thousand Cubic Feet |
March, 1998 | 2.53 | + 0.02 | Dollars per Thousand Cubic Feet |
April, 1998 | 2.59 | + 0.06 | Dollars per Thousand Cubic Feet |
May, 1998 | 2.47 | -0.12 | Dollars per Thousand Cubic Feet |
June, 1998 | 2.4 | -0.07 | Dollars per Thousand Cubic Feet |
July, 1998 | 2.5 | + 0.1 | Dollars per Thousand Cubic Feet |
August, 1998 | 2.21 | -0.29 | Dollars per Thousand Cubic Feet |
September, 1998 | 2.15 | -0.06 | Dollars per Thousand Cubic Feet |
October, 1998 | 2.22 | + 0.07 | Dollars per Thousand Cubic Feet |
November, 1998 | 2.37 | + 0.15 | Dollars per Thousand Cubic Feet |
December, 1998 | 2.22 | -0.15 | Dollars per Thousand Cubic Feet |
January, 1999 | 2.32 | + 0.1 | Dollars per Thousand Cubic Feet |
February, 1999 | 2.26 | -0.06 | Dollars per Thousand Cubic Feet |
March, 1999 | 2.15 | -0.11 | Dollars per Thousand Cubic Feet |
April, 1999 | 2.29 | + 0.14 | Dollars per Thousand Cubic Feet |
May, 1999 | 2.57 | + 0.28 | Dollars per Thousand Cubic Feet |
June, 1999 | 2.53 | -0.04 | Dollars per Thousand Cubic Feet |
July, 1999 | 2.58 | + 0.05 | Dollars per Thousand Cubic Feet |
August, 1999 | 2.86 | + 0.28 | Dollars per Thousand Cubic Feet |
September, 1999 | 2.98 | + 0.12 | Dollars per Thousand Cubic Feet |
October, 1999 | 2.83 | -0.15 | Dollars per Thousand Cubic Feet |
November, 1999 | 3.01 | + 0.18 | Dollars per Thousand Cubic Feet |
December, 1999 | 2.68 | -0.33 | Dollars per Thousand Cubic Feet |
January, 2000 | 2.74 | + 0.06 | Dollars per Thousand Cubic Feet |
February, 2000 | 2.96 | + 0.22 | Dollars per Thousand Cubic Feet |
March, 2000 | 3 | + 0.04 | Dollars per Thousand Cubic Feet |
April, 2000 | 3.23 | + 0.23 | Dollars per Thousand Cubic Feet |
May, 2000 | 3.63 | + 0.4 | Dollars per Thousand Cubic Feet |
June, 2000 | 4.45 | + 0.82 | Dollars per Thousand Cubic Feet |
July, 2000 | 4.35 | -0.1 | Dollars per Thousand Cubic Feet |
August, 2000 | 4.27 | -0.08 | Dollars per Thousand Cubic Feet |
September, 2000 | 4.85 | + 0.58 | Dollars per Thousand Cubic Feet |
October, 2000 | 5.17 | + 0.32 | Dollars per Thousand Cubic Feet |
November, 2000 | 5.37 | + 0.2 | Dollars per Thousand Cubic Feet |
December, 2000 | 8.23 | + 2.86 | Dollars per Thousand Cubic Feet |
January, 2001 | 9.55 | + 1.32 | Dollars per Thousand Cubic Feet |
February, 2001 | 7.18 | -2.37 | Dollars per Thousand Cubic Feet |
March, 2001 | 5.91 | -1.27 | Dollars per Thousand Cubic Feet |
April, 2001 | 5.82 | -0.09 | Dollars per Thousand Cubic Feet |
May, 2001 | 5.29 | -0.53 | Dollars per Thousand Cubic Feet |
June, 2001 | 4.37 | -0.92 | Dollars per Thousand Cubic Feet |
July, 2001 | 3.85 | -0.52 | Dollars per Thousand Cubic Feet |
August, 2001 | 3.65 | -0.2 | Dollars per Thousand Cubic Feet |
September, 2001 | 3.03 | -0.62 | Dollars per Thousand Cubic Feet |
October, 2001 | 2.78 | -0.25 | Dollars per Thousand Cubic Feet |
November, 2001 | 3.33 | + 0.55 | Dollars per Thousand Cubic Feet |
December, 2001 | 3.15 | -0.18 | Dollars per Thousand Cubic Feet |
January, 2002 | 3.1 | -0.05 | Dollars per Thousand Cubic Feet |
February, 2002 | 2.86 | -0.24 | Dollars per Thousand Cubic Feet |
March, 2002 | 3.37 | + 0.51 | Dollars per Thousand Cubic Feet |
April, 2002 | 3.8 | + 0.43 | Dollars per Thousand Cubic Feet |
May, 2002 | 3.78 | -0.02 | Dollars per Thousand Cubic Feet |
June, 2002 | 3.61 | -0.17 | Dollars per Thousand Cubic Feet |
July, 2002 | 3.49 | -0.12 | Dollars per Thousand Cubic Feet |
August, 2002 | 3.42 | -0.07 | Dollars per Thousand Cubic Feet |
September, 2002 | 3.71 | + 0.29 | Dollars per Thousand Cubic Feet |
October, 2002 | 4.19 | + 0.48 | Dollars per Thousand Cubic Feet |
November, 2002 | 4.35 | + 0.16 | Dollars per Thousand Cubic Feet |
December, 2002 | 4.72 | + 0.37 | Dollars per Thousand Cubic Feet |
January, 2003 | 5.33 | + 0.61 | Dollars per Thousand Cubic Feet |
February, 2003 | 6.47 | + 1.14 | Dollars per Thousand Cubic Feet |
March, 2003 | 7.05 | + 0.58 | Dollars per Thousand Cubic Feet |
April, 2003 | 5.38 | -1.67 | Dollars per Thousand Cubic Feet |
May, 2003 | 5.7 | + 0.32 | Dollars per Thousand Cubic Feet |
June, 2003 | 6.08 | + 0.38 | Dollars per Thousand Cubic Feet |
July, 2003 | 5.45 | -0.63 | Dollars per Thousand Cubic Feet |
August, 2003 | 5.23 | -0.22 | Dollars per Thousand Cubic Feet |
September, 2003 | 5.12 | -0.11 | Dollars per Thousand Cubic Feet |
October, 2003 | 4.98 | -0.14 | Dollars per Thousand Cubic Feet |
November, 2003 | 4.85 | -0.13 | Dollars per Thousand Cubic Feet |
December, 2003 | 5.69 | + 0.84 | Dollars per Thousand Cubic Feet |
January, 2004 | 6.37 | + 0.68 | Dollars per Thousand Cubic Feet |
February, 2004 | 5.76 | -0.61 | Dollars per Thousand Cubic Feet |
March, 2004 | 5.5 | -0.26 | Dollars per Thousand Cubic Feet |
April, 2004 | 5.74 | + 0.24 | Dollars per Thousand Cubic Feet |
May, 2004 | 6.3 | + 0.56 | Dollars per Thousand Cubic Feet |
June, 2004 | 6.52 | + 0.22 | Dollars per Thousand Cubic Feet |
July, 2004 | 6.24 | -0.28 | Dollars per Thousand Cubic Feet |
August, 2004 | 5.97 | -0.27 | Dollars per Thousand Cubic Feet |
September, 2004 | 5.39 | -0.58 | Dollars per Thousand Cubic Feet |
October, 2004 | 6.05 | + 0.66 | Dollars per Thousand Cubic Feet |
November, 2004 | 6.71 | + 0.66 | Dollars per Thousand Cubic Feet |
December, 2004 | 6.88 | + 0.17 | Dollars per Thousand Cubic Feet |
January, 2005 | 6.72 | -0.16 | Dollars per Thousand Cubic Feet |
February, 2005 | 6.42 | -0.3 | Dollars per Thousand Cubic Feet |
March, 2005 | 6.84 | + 0.42 | Dollars per Thousand Cubic Feet |
April, 2005 | 7.27 | + 0.43 | Dollars per Thousand Cubic Feet |
May, 2005 | 6.83 | -0.44 | Dollars per Thousand Cubic Feet |
June, 2005 | 7.08 | + 0.25 | Dollars per Thousand Cubic Feet |
July, 2005 | 7.57 | + 0.49 | Dollars per Thousand Cubic Feet |
August, 2005 | 8.67 | + 1.1 | Dollars per Thousand Cubic Feet |
September, 2005 | 10.99 | + 2.32 | Dollars per Thousand Cubic Feet |
October, 2005 | 11.84 | + 0.85 | Dollars per Thousand Cubic Feet |
November, 2005 | 9.87 | -1.97 | Dollars per Thousand Cubic Feet |
December, 2005 | 11.26 | + 1.39 | Dollars per Thousand Cubic Feet |
January, 2006 | 9.15 | -2.11 | Dollars per Thousand Cubic Feet |
February, 2006 | 8 | -1.15 | Dollars per Thousand Cubic Feet |
March, 2006 | 7.36 | -0.64 | Dollars per Thousand Cubic Feet |
April, 2006 | 7.32 | -0.04 | Dollars per Thousand Cubic Feet |
May, 2006 | 6.89 | -0.43 | Dollars per Thousand Cubic Feet |
June, 2006 | 6.69 | -0.2 | Dollars per Thousand Cubic Feet |
July, 2006 | 6.69 | 0 | Dollars per Thousand Cubic Feet |
August, 2006 | 7.56 | + 0.87 | Dollars per Thousand Cubic Feet |
September, 2006 | 6.27 | -1.29 | Dollars per Thousand Cubic Feet |
October, 2006 | 5.76 | -0.51 | Dollars per Thousand Cubic Feet |
November, 2006 | 7.48 | + 1.72 | Dollars per Thousand Cubic Feet |
December, 2006 | 7.57 | + 0.09 | Dollars per Thousand Cubic Feet |
January, 2007 | 7.08 | -0.49 | Dollars per Thousand Cubic Feet |
February, 2007 | 8.18 | + 1.1 | Dollars per Thousand Cubic Feet |
March, 2007 | 7.64 | -0.54 | Dollars per Thousand Cubic Feet |
April, 2007 | 7.77 | + 0.13 | Dollars per Thousand Cubic Feet |
May, 2007 | 7.96 | + 0.19 | Dollars per Thousand Cubic Feet |
June, 2007 | 7.8 | -0.16 | Dollars per Thousand Cubic Feet |
July, 2007 | 7.03 | -0.77 | Dollars per Thousand Cubic Feet |
August, 2007 | 6.83 | -0.2 | Dollars per Thousand Cubic Feet |
September, 2007 | 6.33 | -0.5 | Dollars per Thousand Cubic Feet |
October, 2007 | 7 | + 0.67 | Dollars per Thousand Cubic Feet |
November, 2007 | 7.28 | + 0.28 | Dollars per Thousand Cubic Feet |
December, 2007 | 7.93 | + 0.65 | Dollars per Thousand Cubic Feet |
January, 2008 | 8.52 | + 0.59 | Dollars per Thousand Cubic Feet |
February, 2008 | 8.87 | + 0.35 | Dollars per Thousand Cubic Feet |
March, 2008 | 9.53 | + 0.66 | Dollars per Thousand Cubic Feet |
April, 2008 | 10.19 | + 0.66 | Dollars per Thousand Cubic Feet |
May, 2008 | 10.97 | + 0.78 | Dollars per Thousand Cubic Feet |
June, 2008 | 12.41 | + 1.44 | Dollars per Thousand Cubic Feet |
July, 2008 | 11.71 | -0.7 | Dollars per Thousand Cubic Feet |
August, 2008 | 8.97 | -2.74 | Dollars per Thousand Cubic Feet |
September, 2008 | 7.81 | -1.16 | Dollars per Thousand Cubic Feet |
October, 2008 | 6.74 | -1.07 | Dollars per Thousand Cubic Feet |
November, 2008 | 6.64 | -0.1 | Dollars per Thousand Cubic Feet |
December, 2008 | 6.9 | + 0.26 | Dollars per Thousand Cubic Feet |
January, 2009 | 6.62 | -0.28 | Dollars per Thousand Cubic Feet |
February, 2009 | 5.62 | -1 | Dollars per Thousand Cubic Feet |
March, 2009 | 4.92 | -0.7 | Dollars per Thousand Cubic Feet |
April, 2009 | 4.7 | -0.22 | Dollars per Thousand Cubic Feet |
May, 2009 | 4.7 | 0 | Dollars per Thousand Cubic Feet |
June, 2009 | 4.62 | -0.08 | Dollars per Thousand Cubic Feet |
July, 2009 | 4.47 | -0.15 | Dollars per Thousand Cubic Feet |
August, 2009 | 4.3 | -0.17 | Dollars per Thousand Cubic Feet |
September, 2009 | 4.02 | -0.28 | Dollars per Thousand Cubic Feet |
October, 2009 | 5.04 | + 1.02 | Dollars per Thousand Cubic Feet |
November, 2009 | 5.06 | + 0.02 | Dollars per Thousand Cubic Feet |
December, 2009 | 6.24 | + 1.18 | Dollars per Thousand Cubic Feet |
January, 2010 | 6.98 | + 0.74 | Dollars per Thousand Cubic Feet |
February, 2010 | 6.27 | -0.71 | Dollars per Thousand Cubic Feet |
March, 2010 | 5.47 | -0.8 | Dollars per Thousand Cubic Feet |
April, 2010 | 4.91 | -0.56 | Dollars per Thousand Cubic Feet |
May, 2010 | 4.96 | + 0.05 | Dollars per Thousand Cubic Feet |
June, 2010 | 5.31 | + 0.35 | Dollars per Thousand Cubic Feet |
July, 2010 | 5.34 | + 0.03 | Dollars per Thousand Cubic Feet |
August, 2010 | 5.06 | -0.28 | Dollars per Thousand Cubic Feet |
September, 2010 | 4.61 | -0.45 | Dollars per Thousand Cubic Feet |
October, 2010 | 4.45 | -0.16 | Dollars per Thousand Cubic Feet |
November, 2010 | 4.55 | + 0.1 | Dollars per Thousand Cubic Feet |
December, 2010 | 5.68 | + 1.13 | Dollars per Thousand Cubic Feet |
January, 2011 | 5.66 | -0.02 | Dollars per Thousand Cubic Feet |
February, 2011 | 5.29 | -0.37 | Dollars per Thousand Cubic Feet |
March, 2011 | 4.84 | -0.45 | Dollars per Thousand Cubic Feet |
April, 2011 | 5.03 | + 0.19 | Dollars per Thousand Cubic Feet |
May, 2011 | 5.04 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
June, 2011 | 5.2 | + 0.16 | Dollars per Thousand Cubic Feet |
July, 2011 | 5.13 | -0.07 | Dollars per Thousand Cubic Feet |
August, 2011 | 4.85 | -0.28 | Dollars per Thousand Cubic Feet |
September, 2011 | 4.71 | -0.14 | Dollars per Thousand Cubic Feet |
October, 2011 | 4.49 | -0.22 | Dollars per Thousand Cubic Feet |
November, 2011 | 4.26 | -0.23 | Dollars per Thousand Cubic Feet |
December, 2011 | 4.18 | -0.08 | Dollars per Thousand Cubic Feet |
January, 2012 | 3.82 | -0.36 | Dollars per Thousand Cubic Feet |
February, 2012 | 3.46 | -0.36 | Dollars per Thousand Cubic Feet |
March, 2012 | 3.09 | -0.37 | Dollars per Thousand Cubic Feet |
April, 2012 | 2.81 | -0.28 | Dollars per Thousand Cubic Feet |
May, 2012 | 3.05 | + 0.24 | Dollars per Thousand Cubic Feet |
June, 2012 | 3.21 | + 0.16 | Dollars per Thousand Cubic Feet |
July, 2012 | 3.54 | + 0.33 | Dollars per Thousand Cubic Feet |
August, 2012 | 3.61 | + 0.07 | Dollars per Thousand Cubic Feet |
September, 2012 | 3.54 | -0.07 | Dollars per Thousand Cubic Feet |
October, 2012 | 4 | + 0.46 | Dollars per Thousand Cubic Feet |
November, 2012 | 4.43 | + 0.43 | Dollars per Thousand Cubic Feet |
December, 2012 | 4.35 | -0.08 | Dollars per Thousand Cubic Feet |
January, 2013 | 4.56 | + 0.21 | Dollars per Thousand Cubic Feet |
February, 2013 | 4.59 | + 0.03 | Dollars per Thousand Cubic Feet |
March, 2013 | 4.5 | -0.09 | Dollars per Thousand Cubic Feet |
April, 2013 | 4.84 | + 0.34 | Dollars per Thousand Cubic Feet |
May, 2013 | 4.79 | -0.05 | Dollars per Thousand Cubic Feet |
June, 2013 | 4.56 | -0.23 | Dollars per Thousand Cubic Feet |
July, 2013 | 4.34 | -0.22 | Dollars per Thousand Cubic Feet |
August, 2013 | 4.03 | -0.31 | Dollars per Thousand Cubic Feet |
September, 2013 | 4.22 | + 0.19 | Dollars per Thousand Cubic Feet |
October, 2013 | 4.26 | + 0.04 | Dollars per Thousand Cubic Feet |
November, 2013 | 4.36 | + 0.1 | Dollars per Thousand Cubic Feet |
December, 2013 | 5.11 | + 0.75 | Dollars per Thousand Cubic Feet |
January, 2014 | 7.46 | + 2.35 | Dollars per Thousand Cubic Feet |
February, 2014 | 7.8 | + 0.34 | Dollars per Thousand Cubic Feet |
March, 2014 | 6.29 | -1.51 | Dollars per Thousand Cubic Feet |
April, 2014 | 5.25 | -1.04 | Dollars per Thousand Cubic Feet |
May, 2014 | 5.09 | -0.16 | Dollars per Thousand Cubic Feet |
June, 2014 | 4.99 | -0.1 | Dollars per Thousand Cubic Feet |
July, 2014 | 4.58 | -0.41 | Dollars per Thousand Cubic Feet |
August, 2014 | 4.25 | -0.33 | Dollars per Thousand Cubic Feet |
September, 2014 | 4.34 | + 0.09 | Dollars per Thousand Cubic Feet |
October, 2014 | 4.23 | -0.11 | Dollars per Thousand Cubic Feet |
November, 2014 | 4.68 | + 0.45 | Dollars per Thousand Cubic Feet |
December, 2014 | 4.5 | -0.18 | Dollars per Thousand Cubic Feet |
January, 2015 | 4.31 | -0.19 | Dollars per Thousand Cubic Feet |
February, 2015 | 5.02 | + 0.71 | Dollars per Thousand Cubic Feet |
March, 2015 | 3.71 | -1.31 | Dollars per Thousand Cubic Feet |
April, 2015 | 3.24 | -0.47 | Dollars per Thousand Cubic Feet |
May, 2015 | 3.28 | + 0.04 | Dollars per Thousand Cubic Feet |
June, 2015 | 3.25 | -0.03 | Dollars per Thousand Cubic Feet |
July, 2015 | 3.23 | -0.02 | Dollars per Thousand Cubic Feet |
August, 2015 | 3.23 | 0 | Dollars per Thousand Cubic Feet |
September, 2015 | 3.2 | -0.03 | Dollars per Thousand Cubic Feet |
October, 2015 | 3.04 | -0.16 | Dollars per Thousand Cubic Feet |
November, 2015 | 2.78 | -0.26 | Dollars per Thousand Cubic Feet |
December, 2015 | 2.72 | -0.06 | Dollars per Thousand Cubic Feet |
January, 2016 | 3.18 | + 0.46 | Dollars per Thousand Cubic Feet |
February, 2016 | 2.83 | -0.35 | Dollars per Thousand Cubic Feet |
March, 2016 | 2.33 | -0.5 | Dollars per Thousand Cubic Feet |
April, 2016 | 2.52 | + 0.19 | Dollars per Thousand Cubic Feet |
May, 2016 | 2.49 | -0.03 | Dollars per Thousand Cubic Feet |
June, 2016 | 2.77 | + 0.28 | Dollars per Thousand Cubic Feet |
July, 2016 | 3.07 | + 0.3 | Dollars per Thousand Cubic Feet |
August, 2016 | 3.07 | 0 | Dollars per Thousand Cubic Feet |
September, 2016 | 3.18 | + 0.11 | Dollars per Thousand Cubic Feet |
October, 2016 | 3.23 | + 0.05 | Dollars per Thousand Cubic Feet |
November, 2016 | 3.14 | -0.09 | Dollars per Thousand Cubic Feet |
December, 2016 | 4.15 | + 1.01 | Dollars per Thousand Cubic Feet |
January, 2017 | 4.31 | + 0.16 | Dollars per Thousand Cubic Feet |
February, 2017 | 3.72 | -0.59 | Dollars per Thousand Cubic Feet |
March, 2017 | 3.51 | -0.21 | Dollars per Thousand Cubic Feet |
April, 2017 | 3.5 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
May, 2017 | 3.61 | + 0.11 | Dollars per Thousand Cubic Feet |
June, 2017 | 3.4 | -0.21 | Dollars per Thousand Cubic Feet |
July, 2017 | 3.32 | -0.08 | Dollars per Thousand Cubic Feet |
August, 2017 | 3.24 | -0.08 | Dollars per Thousand Cubic Feet |
September, 2017 | 3.27 | + 0.03 | Dollars per Thousand Cubic Feet |
October, 2017 | 3.24 | -0.03 | Dollars per Thousand Cubic Feet |
November, 2017 | 3.5 | + 0.26 | Dollars per Thousand Cubic Feet |
December, 2017 | 3.81 | + 0.31 | Dollars per Thousand Cubic Feet |
January, 2018 | 5.38 | + 1.57 | Dollars per Thousand Cubic Feet |
February, 2018 | 3.75 | -1.63 | Dollars per Thousand Cubic Feet |
March, 2018 | 3.32 | -0.43 | Dollars per Thousand Cubic Feet |
April, 2018 | 3.26 | -0.06 | Dollars per Thousand Cubic Feet |
May, 2018 | 3.16 | -0.1 | Dollars per Thousand Cubic Feet |
June, 2018 | 3.23 | + 0.07 | Dollars per Thousand Cubic Feet |
July, 2018 | 3.35 | + 0.12 | Dollars per Thousand Cubic Feet |
August, 2018 | 3.39 | + 0.04 | Dollars per Thousand Cubic Feet |
September, 2018 | 3.23 | -0.16 | Dollars per Thousand Cubic Feet |
October, 2018 | 3.52 | + 0.29 | Dollars per Thousand Cubic Feet |
November, 2018 | 4.34 | + 0.82 | Dollars per Thousand Cubic Feet |
December, 2018 | 4.89 | + 0.55 | Dollars per Thousand Cubic Feet |
January, 2019 | 4.16 | -0.73 | Dollars per Thousand Cubic Feet |
February, 2019 | 3.78 | -0.38 | Dollars per Thousand Cubic Feet |
March, 2019 | 3.6 | -0.18 | Dollars per Thousand Cubic Feet |
April, 2019 | 2.99 | -0.61 | Dollars per Thousand Cubic Feet |
May, 2019 | 2.85 | -0.14 | Dollars per Thousand Cubic Feet |
June, 2019 | 2.66 | -0.19 | Dollars per Thousand Cubic Feet |
July, 2019 | 2.63 | -0.03 | Dollars per Thousand Cubic Feet |
August, 2019 | 2.5 | -0.13 | Dollars per Thousand Cubic Feet |
September, 2019 | 2.68 | + 0.18 | Dollars per Thousand Cubic Feet |
October, 2019 | 2.58 | -0.1 | Dollars per Thousand Cubic Feet |
November, 2019 | 3.08 | + 0.5 | Dollars per Thousand Cubic Feet |
December, 2019 | 3.04 | -0.04 | Dollars per Thousand Cubic Feet |
January, 2020 | 2.74 | -0.3 | Dollars per Thousand Cubic Feet |
February, 2020 | 2.5 | -0.24 | Dollars per Thousand Cubic Feet |
March, 2020 | 2.23 | -0.27 | Dollars per Thousand Cubic Feet |
April, 2020 | 2.2 | -0.03 | Dollars per Thousand Cubic Feet |
May, 2020 | 2.25 | + 0.05 | Dollars per Thousand Cubic Feet |
June, 2020 | 2.08 | -0.17 | Dollars per Thousand Cubic Feet |
July, 2020 | 2.1 | + 0.02 | Dollars per Thousand Cubic Feet |
August, 2020 | 2.47 | + 0.37 | Dollars per Thousand Cubic Feet |
September, 2020 | 2.49 | + 0.02 | Dollars per Thousand Cubic Feet |
October, 2020 | 2.57 | + 0.08 | Dollars per Thousand Cubic Feet |
November, 2020 | 3.08 | + 0.51 | Dollars per Thousand Cubic Feet |
December, 2020 | 3.3 | + 0.22 | Dollars per Thousand Cubic Feet |
January, 2021 | 3.33 | + 0.03 | Dollars per Thousand Cubic Feet |
February, 2021 | 16.29 | + 12.96 | Dollars per Thousand Cubic Feet |
March, 2021 | 3.41 | -12.88 | Dollars per Thousand Cubic Feet |