October, 1983 | 3.97 | 0 | Dollars per Thousand Cubic Feet |
November, 1983 | 3.91 | -0.06 | Dollars per Thousand Cubic Feet |
December, 1983 | 3.88 | -0.03 | Dollars per Thousand Cubic Feet |
January, 1984 | 3.94 | + 0.06 | Dollars per Thousand Cubic Feet |
February, 1984 | 4.02 | + 0.08 | Dollars per Thousand Cubic Feet |
March, 1984 | 3.91 | -0.11 | Dollars per Thousand Cubic Feet |
April, 1984 | 3.96 | + 0.05 | Dollars per Thousand Cubic Feet |
May, 1984 | 3.98 | + 0.02 | Dollars per Thousand Cubic Feet |
June, 1984 | 4.02 | + 0.04 | Dollars per Thousand Cubic Feet |
July, 1984 | 4.06 | + 0.04 | Dollars per Thousand Cubic Feet |
August, 1984 | 3.69 | -0.37 | Dollars per Thousand Cubic Feet |
September, 1984 | 4.02 | + 0.33 | Dollars per Thousand Cubic Feet |
October, 1984 | 3.99 | -0.029999999999999 | Dollars per Thousand Cubic Feet |
November, 1984 | 3.92 | -0.07 | Dollars per Thousand Cubic Feet |
December, 1984 | 3.97 | + 0.05 | Dollars per Thousand Cubic Feet |
January, 1985 | 3.89 | -0.08 | Dollars per Thousand Cubic Feet |
February, 1985 | 3.94 | + 0.05 | Dollars per Thousand Cubic Feet |
March, 1985 | 3.97 | + 0.03 | Dollars per Thousand Cubic Feet |
April, 1985 | 3.91 | -0.06 | Dollars per Thousand Cubic Feet |
May, 1985 | 3.89 | -0.02 | Dollars per Thousand Cubic Feet |
June, 1985 | 3.86 | -0.03 | Dollars per Thousand Cubic Feet |
July, 1985 | 3.69 | -0.17 | Dollars per Thousand Cubic Feet |
August, 1985 | 3.7 | + 0.01 | Dollars per Thousand Cubic Feet |
September, 1985 | 3.68 | -0.02 | Dollars per Thousand Cubic Feet |
October, 1985 | 3.59 | -0.09 | Dollars per Thousand Cubic Feet |
November, 1985 | 3.46 | -0.13 | Dollars per Thousand Cubic Feet |
December, 1985 | 3.45 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
January, 1986 | 3.52 | + 0.07 | Dollars per Thousand Cubic Feet |
February, 1986 | 3.52 | 0 | Dollars per Thousand Cubic Feet |
March, 1986 | 3.5 | -0.02 | Dollars per Thousand Cubic Feet |
April, 1986 | 3.33 | -0.17 | Dollars per Thousand Cubic Feet |
May, 1986 | 3.15 | -0.18 | Dollars per Thousand Cubic Feet |
June, 1986 | 3.11 | -0.04 | Dollars per Thousand Cubic Feet |
July, 1986 | 3.08 | -0.03 | Dollars per Thousand Cubic Feet |
August, 1986 | 3.04 | -0.04 | Dollars per Thousand Cubic Feet |
September, 1986 | 3.02 | -0.02 | Dollars per Thousand Cubic Feet |
October, 1986 | 2.94 | -0.08 | Dollars per Thousand Cubic Feet |
November, 1986 | 2.9 | -0.04 | Dollars per Thousand Cubic Feet |
December, 1986 | 2.99 | + 0.09 | Dollars per Thousand Cubic Feet |
January, 1987 | 2.98 | -0.01 | Dollars per Thousand Cubic Feet |
February, 1987 | 3.03 | + 0.05 | Dollars per Thousand Cubic Feet |
March, 1987 | 2.91 | -0.12 | Dollars per Thousand Cubic Feet |
April, 1987 | 2.86 | -0.05 | Dollars per Thousand Cubic Feet |
May, 1987 | 2.81 | -0.05 | Dollars per Thousand Cubic Feet |
June, 1987 | 2.84 | + 0.03 | Dollars per Thousand Cubic Feet |
July, 1987 | 2.92 | + 0.08 | Dollars per Thousand Cubic Feet |
August, 1987 | 2.89 | -0.03 | Dollars per Thousand Cubic Feet |
September, 1987 | 2.83 | -0.06 | Dollars per Thousand Cubic Feet |
October, 1987 | 2.69 | -0.14 | Dollars per Thousand Cubic Feet |
November, 1987 | 2.76 | + 0.07 | Dollars per Thousand Cubic Feet |
December, 1987 | 2.84 | + 0.08 | Dollars per Thousand Cubic Feet |
January, 1988 | 2.91 | + 0.07 | Dollars per Thousand Cubic Feet |
February, 1988 | 2.95 | + 0.04 | Dollars per Thousand Cubic Feet |
March, 1988 | 2.87 | -0.08 | Dollars per Thousand Cubic Feet |
April, 1988 | 2.79 | -0.08 | Dollars per Thousand Cubic Feet |
May, 1988 | 2.75 | -0.04 | Dollars per Thousand Cubic Feet |
June, 1988 | 2.87 | + 0.12 | Dollars per Thousand Cubic Feet |
July, 1988 | 2.87 | 0 | Dollars per Thousand Cubic Feet |
August, 1988 | 2.92 | + 0.05 | Dollars per Thousand Cubic Feet |
September, 1988 | 3.05 | + 0.13 | Dollars per Thousand Cubic Feet |
October, 1988 | 2.92 | -0.13 | Dollars per Thousand Cubic Feet |
November, 1988 | 2.98 | + 0.06 | Dollars per Thousand Cubic Feet |
December, 1988 | 3.08 | + 0.1 | Dollars per Thousand Cubic Feet |
January, 1989 | 3.17 | + 0.09 | Dollars per Thousand Cubic Feet |
February, 1989 | 3.1 | -0.07 | Dollars per Thousand Cubic Feet |
March, 1989 | 2.89 | -0.21 | Dollars per Thousand Cubic Feet |
April, 1989 | 2.83 | -0.06 | Dollars per Thousand Cubic Feet |
May, 1989 | 2.94 | + 0.11 | Dollars per Thousand Cubic Feet |
June, 1989 | 2.98 | + 0.04 | Dollars per Thousand Cubic Feet |
July, 1989 | 3.08 | + 0.1 | Dollars per Thousand Cubic Feet |
August, 1989 | 3.04 | -0.04 | Dollars per Thousand Cubic Feet |
September, 1989 | 2.99 | -0.05 | Dollars per Thousand Cubic Feet |
October, 1989 | 2.84 | -0.15 | Dollars per Thousand Cubic Feet |
November, 1989 | 2.98 | + 0.14 | Dollars per Thousand Cubic Feet |
December, 1989 | 3.1 | + 0.12 | Dollars per Thousand Cubic Feet |
January, 1990 | 3.24 | + 0.14 | Dollars per Thousand Cubic Feet |
February, 1990 | 3.1 | -0.14 | Dollars per Thousand Cubic Feet |
March, 1990 | 2.94 | -0.16 | Dollars per Thousand Cubic Feet |
April, 1990 | 2.83 | -0.11 | Dollars per Thousand Cubic Feet |
May, 1990 | 2.81 | -0.02 | Dollars per Thousand Cubic Feet |
June, 1990 | 3 | + 0.19 | Dollars per Thousand Cubic Feet |
July, 1990 | 3.03 | + 0.03 | Dollars per Thousand Cubic Feet |
August, 1990 | 2.91 | -0.12 | Dollars per Thousand Cubic Feet |
September, 1990 | 2.92 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
October, 1990 | 2.81 | -0.11 | Dollars per Thousand Cubic Feet |
November, 1990 | 3.14 | + 0.33 | Dollars per Thousand Cubic Feet |
December, 1990 | 3.19 | + 0.05 | Dollars per Thousand Cubic Feet |
January, 1991 | 3.08 | -0.11 | Dollars per Thousand Cubic Feet |
February, 1991 | 2.94 | -0.14 | Dollars per Thousand Cubic Feet |
March, 1991 | 2.78 | -0.16 | Dollars per Thousand Cubic Feet |
April, 1991 | 2.74 | -0.04 | Dollars per Thousand Cubic Feet |
May, 1991 | 2.76 | + 0.02 | Dollars per Thousand Cubic Feet |
June, 1991 | 2.86 | + 0.1 | Dollars per Thousand Cubic Feet |
July, 1991 | 2.74 | -0.12 | Dollars per Thousand Cubic Feet |
August, 1991 | 2.78 | + 0.04 | Dollars per Thousand Cubic Feet |
September, 1991 | 2.91 | + 0.13 | Dollars per Thousand Cubic Feet |
October, 1991 | 2.92 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
November, 1991 | 2.92 | 0 | Dollars per Thousand Cubic Feet |
December, 1991 | 3.05 | + 0.13 | Dollars per Thousand Cubic Feet |
January, 1992 | 2.9 | -0.15 | Dollars per Thousand Cubic Feet |
February, 1992 | 2.7 | -0.2 | Dollars per Thousand Cubic Feet |
March, 1992 | 2.61 | -0.09 | Dollars per Thousand Cubic Feet |
April, 1992 | 2.74 | + 0.13 | Dollars per Thousand Cubic Feet |
May, 1992 | 2.9 | + 0.16 | Dollars per Thousand Cubic Feet |
June, 1992 | 3 | + 0.1 | Dollars per Thousand Cubic Feet |
July, 1992 | 3.01 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
August, 1992 | 3.18 | + 0.17 | Dollars per Thousand Cubic Feet |
September, 1992 | 3.23 | + 0.05 | Dollars per Thousand Cubic Feet |
October, 1992 | 3.5 | + 0.27 | Dollars per Thousand Cubic Feet |
November, 1992 | 3.33 | -0.17 | Dollars per Thousand Cubic Feet |
December, 1992 | 3.17 | -0.16 | Dollars per Thousand Cubic Feet |
January, 1993 | 3.11 | -0.06 | Dollars per Thousand Cubic Feet |
February, 1993 | 2.94 | -0.17 | Dollars per Thousand Cubic Feet |
March, 1993 | 3.06 | + 0.12 | Dollars per Thousand Cubic Feet |
April, 1993 | 3.24 | + 0.18 | Dollars per Thousand Cubic Feet |
May, 1993 | 3.58 | + 0.34 | Dollars per Thousand Cubic Feet |
June, 1993 | 3.44 | -0.14 | Dollars per Thousand Cubic Feet |
July, 1993 | 3.34 | -0.1 | Dollars per Thousand Cubic Feet |
August, 1993 | 3.35 | + 0.01 | Dollars per Thousand Cubic Feet |
September, 1993 | 3.54 | + 0.19 | Dollars per Thousand Cubic Feet |
October, 1993 | 3.15 | -0.39 | Dollars per Thousand Cubic Feet |
November, 1993 | 3.15 | 0 | Dollars per Thousand Cubic Feet |
December, 1993 | 3.27 | + 0.12 | Dollars per Thousand Cubic Feet |
January, 1994 | 3.04 | -0.23 | Dollars per Thousand Cubic Feet |
February, 1994 | 3.26 | + 0.22 | Dollars per Thousand Cubic Feet |
March, 1994 | 3.33 | + 0.07 | Dollars per Thousand Cubic Feet |
April, 1994 | 3.15 | -0.18 | Dollars per Thousand Cubic Feet |
May, 1994 | 3.17 | + 0.02 | Dollars per Thousand Cubic Feet |
June, 1994 | 3.17 | 0 | Dollars per Thousand Cubic Feet |
July, 1994 | 3.12 | -0.05 | Dollars per Thousand Cubic Feet |
August, 1994 | 3.15 | + 0.03 | Dollars per Thousand Cubic Feet |
September, 1994 | 2.92 | -0.23 | Dollars per Thousand Cubic Feet |
October, 1994 | 2.8 | -0.12 | Dollars per Thousand Cubic Feet |
November, 1994 | 2.84 | + 0.04 | Dollars per Thousand Cubic Feet |
December, 1994 | 2.86 | + 0.02 | Dollars per Thousand Cubic Feet |
January, 1995 | 2.79 | -0.07 | Dollars per Thousand Cubic Feet |
February, 1995 | 2.71 | -0.08 | Dollars per Thousand Cubic Feet |
March, 1995 | 2.74 | + 0.03 | Dollars per Thousand Cubic Feet |
April, 1995 | 2.72 | -0.02 | Dollars per Thousand Cubic Feet |
May, 1995 | 2.8 | + 0.08 | Dollars per Thousand Cubic Feet |
June, 1995 | 2.89 | + 0.09 | Dollars per Thousand Cubic Feet |
July, 1995 | 2.89 | 0 | Dollars per Thousand Cubic Feet |
August, 1995 | 2.87 | -0.02 | Dollars per Thousand Cubic Feet |
September, 1995 | 2.89 | + 0.02 | Dollars per Thousand Cubic Feet |
October, 1995 | 2.83 | -0.06 | Dollars per Thousand Cubic Feet |
November, 1995 | 2.67 | -0.16 | Dollars per Thousand Cubic Feet |
December, 1995 | 2.83 | + 0.16 | Dollars per Thousand Cubic Feet |
January, 1996 | 3.14 | + 0.31 | Dollars per Thousand Cubic Feet |
February, 1996 | 3.16 | + 0.02 | Dollars per Thousand Cubic Feet |
March, 1996 | 3.17 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
April, 1996 | 3.22 | + 0.05 | Dollars per Thousand Cubic Feet |
May, 1996 | 3.18 | -0.04 | Dollars per Thousand Cubic Feet |
June, 1996 | 3.41 | + 0.23 | Dollars per Thousand Cubic Feet |
July, 1996 | 3.49 | + 0.08 | Dollars per Thousand Cubic Feet |
August, 1996 | 3.46 | -0.03 | Dollars per Thousand Cubic Feet |
September, 1996 | 3.05 | -0.41 | Dollars per Thousand Cubic Feet |
October, 1996 | 2.94 | -0.11 | Dollars per Thousand Cubic Feet |
November, 1996 | 3.46 | + 0.52 | Dollars per Thousand Cubic Feet |
December, 1996 | 4.18 | + 0.72 | Dollars per Thousand Cubic Feet |
January, 1997 | 4.28 | + 0.1 | Dollars per Thousand Cubic Feet |
February, 1997 | 3.76 | -0.52 | Dollars per Thousand Cubic Feet |
March, 1997 | 3.07 | -0.69 | Dollars per Thousand Cubic Feet |
April, 1997 | 2.92 | -0.15 | Dollars per Thousand Cubic Feet |
May, 1997 | 3.11 | + 0.19 | Dollars per Thousand Cubic Feet |
June, 1997 | 3.41 | + 0.3 | Dollars per Thousand Cubic Feet |
July, 1997 | 3.44 | + 0.03 | Dollars per Thousand Cubic Feet |
August, 1997 | 3.34 | -0.1 | Dollars per Thousand Cubic Feet |
September, 1997 | 3.5 | + 0.16 | Dollars per Thousand Cubic Feet |
October, 1997 | 3.86 | + 0.36 | Dollars per Thousand Cubic Feet |
November, 1997 | 4.76 | + 0.9 | Dollars per Thousand Cubic Feet |
December, 1997 | 3.42 | -1.34 | Dollars per Thousand Cubic Feet |
January, 1998 | 3.08 | -0.34 | Dollars per Thousand Cubic Feet |
February, 1998 | 3.08 | 0 | Dollars per Thousand Cubic Feet |
March, 1998 | 3.06 | -0.02 | Dollars per Thousand Cubic Feet |
April, 1998 | 3.23 | + 0.17 | Dollars per Thousand Cubic Feet |
May, 1998 | 3.12 | -0.11 | Dollars per Thousand Cubic Feet |
June, 1998 | 2.98 | -0.14 | Dollars per Thousand Cubic Feet |
July, 1998 | 3.31 | + 0.33 | Dollars per Thousand Cubic Feet |
August, 1998 | 3.01 | -0.3 | Dollars per Thousand Cubic Feet |
September, 1998 | 2.78 | -0.23 | Dollars per Thousand Cubic Feet |
October, 1998 | 2.99 | + 0.21 | Dollars per Thousand Cubic Feet |
November, 1998 | 2.99 | 0 | Dollars per Thousand Cubic Feet |
December, 1998 | 3.1 | + 0.11 | Dollars per Thousand Cubic Feet |
January, 1999 | 2.85 | -0.25 | Dollars per Thousand Cubic Feet |
February, 1999 | 2.92 | + 0.07 | Dollars per Thousand Cubic Feet |
March, 1999 | 2.77 | -0.15 | Dollars per Thousand Cubic Feet |
April, 1999 | 2.88 | + 0.11 | Dollars per Thousand Cubic Feet |
May, 1999 | 3.25 | + 0.37 | Dollars per Thousand Cubic Feet |
June, 1999 | 3.12 | -0.13 | Dollars per Thousand Cubic Feet |
July, 1999 | 3.11 | -0.01 | Dollars per Thousand Cubic Feet |
August, 1999 | 3.39 | + 0.28 | Dollars per Thousand Cubic Feet |
September, 1999 | 3.59 | + 0.2 | Dollars per Thousand Cubic Feet |
October, 1999 | 3.21 | -0.38 | Dollars per Thousand Cubic Feet |
November, 1999 | 3.71 | + 0.5 | Dollars per Thousand Cubic Feet |
December, 1999 | 3.19 | -0.52 | Dollars per Thousand Cubic Feet |
January, 2000 | 3.27 | + 0.08 | Dollars per Thousand Cubic Feet |
February, 2000 | 3.48 | + 0.21 | Dollars per Thousand Cubic Feet |
March, 2000 | 3.54 | + 0.06 | Dollars per Thousand Cubic Feet |
April, 2000 | 3.72 | + 0.18 | Dollars per Thousand Cubic Feet |
May, 2000 | 4.15 | + 0.43 | Dollars per Thousand Cubic Feet |
June, 2000 | 5.19 | + 1.04 | Dollars per Thousand Cubic Feet |
July, 2000 | 5.2 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
August, 2000 | 4.63 | -0.57 | Dollars per Thousand Cubic Feet |
September, 2000 | 5.21 | + 0.58 | Dollars per Thousand Cubic Feet |
October, 2000 | 5.66 | + 0.45 | Dollars per Thousand Cubic Feet |
November, 2000 | 5.2 | -0.46 | Dollars per Thousand Cubic Feet |
December, 2000 | 6.64 | + 1.44 | Dollars per Thousand Cubic Feet |
January, 2001 | 8.91 | + 2.27 | Dollars per Thousand Cubic Feet |
February, 2001 | 7.08 | -1.83 | Dollars per Thousand Cubic Feet |
March, 2001 | 6.1 | -0.98 | Dollars per Thousand Cubic Feet |
April, 2001 | 6.3 | + 0.2 | Dollars per Thousand Cubic Feet |
May, 2001 | 5.77 | -0.53 | Dollars per Thousand Cubic Feet |
June, 2001 | 5.38 | -0.39 | Dollars per Thousand Cubic Feet |
July, 2001 | 4.03 | -1.35 | Dollars per Thousand Cubic Feet |
August, 2001 | 4.32 | + 0.29 | Dollars per Thousand Cubic Feet |
September, 2001 | 3.66 | -0.66 | Dollars per Thousand Cubic Feet |
October, 2001 | 3.37 | -0.29 | Dollars per Thousand Cubic Feet |
November, 2001 | 4.02 | + 0.65 | Dollars per Thousand Cubic Feet |
December, 2001 | 3.9 | -0.12 | Dollars per Thousand Cubic Feet |
January, 2002 | 3.79 | -0.11 | Dollars per Thousand Cubic Feet |
February, 2002 | 3.76 | -0.03 | Dollars per Thousand Cubic Feet |
March, 2002 | 3.84 | + 0.08 | Dollars per Thousand Cubic Feet |
April, 2002 | 4.21 | + 0.37 | Dollars per Thousand Cubic Feet |
May, 2002 | 4.07 | -0.14 | Dollars per Thousand Cubic Feet |
June, 2002 | 4.15 | + 0.08 | Dollars per Thousand Cubic Feet |
July, 2002 | 3.95 | -0.2 | Dollars per Thousand Cubic Feet |
August, 2002 | 3.67 | -0.28 | Dollars per Thousand Cubic Feet |
September, 2002 | 3.99 | + 0.32 | Dollars per Thousand Cubic Feet |
October, 2002 | 4.32 | + 0.33 | Dollars per Thousand Cubic Feet |
November, 2002 | 4.65 | + 0.33 | Dollars per Thousand Cubic Feet |
December, 2002 | 4.74 | + 0.09 | Dollars per Thousand Cubic Feet |
January, 2003 | 5.28 | + 0.54 | Dollars per Thousand Cubic Feet |
February, 2003 | 5.83 | + 0.55 | Dollars per Thousand Cubic Feet |
March, 2003 | 7.63 | + 1.8 | Dollars per Thousand Cubic Feet |
April, 2003 | 5.6 | -2.03 | Dollars per Thousand Cubic Feet |
May, 2003 | 5.69 | + 0.090000000000001 | Dollars per Thousand Cubic Feet |
June, 2003 | 6.4 | + 0.71 | Dollars per Thousand Cubic Feet |
July, 2003 | 5.83 | -0.57 | Dollars per Thousand Cubic Feet |
August, 2003 | 5.48 | -0.35 | Dollars per Thousand Cubic Feet |
September, 2003 | 5.58 | + 0.1 | Dollars per Thousand Cubic Feet |
October, 2003 | 5.33 | -0.25 | Dollars per Thousand Cubic Feet |
November, 2003 | 5.54 | + 0.21 | Dollars per Thousand Cubic Feet |
December, 2003 | 5.89 | + 0.35 | Dollars per Thousand Cubic Feet |
January, 2004 | 6.41 | + 0.52 | Dollars per Thousand Cubic Feet |
February, 2004 | 6.35 | -0.06 | Dollars per Thousand Cubic Feet |
March, 2004 | 6.23 | -0.12 | Dollars per Thousand Cubic Feet |
April, 2004 | 6.31 | + 0.079999999999999 | Dollars per Thousand Cubic Feet |
May, 2004 | 6.48 | + 0.17 | Dollars per Thousand Cubic Feet |
June, 2004 | 6.94 | + 0.46 | Dollars per Thousand Cubic Feet |
July, 2004 | 6.68 | -0.26 | Dollars per Thousand Cubic Feet |
August, 2004 | 6.51 | -0.17 | Dollars per Thousand Cubic Feet |
September, 2004 | 6.06 | -0.45 | Dollars per Thousand Cubic Feet |
October, 2004 | 6.3 | + 0.24 | Dollars per Thousand Cubic Feet |
November, 2004 | 7.5 | + 1.2 | Dollars per Thousand Cubic Feet |
December, 2004 | 7.49 | -0.0099999999999998 | Dollars per Thousand Cubic Feet |
January, 2005 | 7.05 | -0.44 | Dollars per Thousand Cubic Feet |
February, 2005 | 7.09 | + 0.04 | Dollars per Thousand Cubic Feet |
March, 2005 | 7.24 | + 0.15 | Dollars per Thousand Cubic Feet |
April, 2005 | 7.79 | + 0.55 | Dollars per Thousand Cubic Feet |
May, 2005 | 7.51 | -0.28 | Dollars per Thousand Cubic Feet |
June, 2005 | 7.3 | -0.21 | Dollars per Thousand Cubic Feet |
July, 2005 | 7.68 | + 0.38 | Dollars per Thousand Cubic Feet |
August, 2005 | 8.2 | + 0.52 | Dollars per Thousand Cubic Feet |
September, 2005 | 10.26 | + 2.06 | Dollars per Thousand Cubic Feet |
October, 2005 | 12.16 | + 1.9 | Dollars per Thousand Cubic Feet |
November, 2005 | 11.57 | -0.59 | Dollars per Thousand Cubic Feet |
December, 2005 | 10.77 | -0.8 | Dollars per Thousand Cubic Feet |
January, 2006 | 10.8 | + 0.030000000000001 | Dollars per Thousand Cubic Feet |
February, 2006 | 9.34 | -1.46 | Dollars per Thousand Cubic Feet |
March, 2006 | 8.81 | -0.53 | Dollars per Thousand Cubic Feet |
April, 2006 | 8.29 | -0.52 | Dollars per Thousand Cubic Feet |
May, 2006 | 7.99 | -0.3 | Dollars per Thousand Cubic Feet |
June, 2006 | 7.39 | -0.6 | Dollars per Thousand Cubic Feet |
July, 2006 | 7.4 | + 0.010000000000001 | Dollars per Thousand Cubic Feet |
August, 2006 | 8.1 | + 0.7 | Dollars per Thousand Cubic Feet |
September, 2006 | 7.68 | -0.42 | Dollars per Thousand Cubic Feet |
October, 2006 | 6.42 | -1.26 | Dollars per Thousand Cubic Feet |
November, 2006 | 8.47 | + 2.05 | Dollars per Thousand Cubic Feet |
December, 2006 | 8.66 | + 0.19 | Dollars per Thousand Cubic Feet |
January, 2007 | 7.88 | -0.78 | Dollars per Thousand Cubic Feet |
February, 2007 | 8.57 | + 0.69 | Dollars per Thousand Cubic Feet |
March, 2007 | 8.79 | + 0.22 | Dollars per Thousand Cubic Feet |
April, 2007 | 8.2 | -0.59 | Dollars per Thousand Cubic Feet |
May, 2007 | 8.41 | + 0.21 | Dollars per Thousand Cubic Feet |
June, 2007 | 8.45 | + 0.039999999999999 | Dollars per Thousand Cubic Feet |
July, 2007 | 8.02 | -0.43 | Dollars per Thousand Cubic Feet |
August, 2007 | 7.6 | -0.42 | Dollars per Thousand Cubic Feet |
September, 2007 | 7 | -0.6 | Dollars per Thousand Cubic Feet |
October, 2007 | 7.43 | + 0.43 | Dollars per Thousand Cubic Feet |
November, 2007 | 8.14 | + 0.71 | Dollars per Thousand Cubic Feet |
December, 2007 | 8.27 | + 0.13 | Dollars per Thousand Cubic Feet |
January, 2008 | 8.37 | + 0.1 | Dollars per Thousand Cubic Feet |
February, 2008 | 8.91 | + 0.54 | Dollars per Thousand Cubic Feet |
March, 2008 | 9.49 | + 0.58 | Dollars per Thousand Cubic Feet |
April, 2008 | 9.84 | + 0.35 | Dollars per Thousand Cubic Feet |
May, 2008 | 11.05 | + 1.21 | Dollars per Thousand Cubic Feet |
June, 2008 | 11.85 | + 0.8 | Dollars per Thousand Cubic Feet |
July, 2008 | 12.48 | + 0.63 | Dollars per Thousand Cubic Feet |
August, 2008 | 10.2 | -2.28 | Dollars per Thousand Cubic Feet |
September, 2008 | 8.99 | -1.21 | Dollars per Thousand Cubic Feet |
October, 2008 | 7.8 | -1.19 | Dollars per Thousand Cubic Feet |
November, 2008 | 7.93 | + 0.13 | Dollars per Thousand Cubic Feet |
December, 2008 | 8.16 | + 0.23 | Dollars per Thousand Cubic Feet |
January, 2009 | 7.97 | -0.19 | Dollars per Thousand Cubic Feet |
February, 2009 | 7.26 | -0.71 | Dollars per Thousand Cubic Feet |
March, 2009 | 6.85 | -0.41 | Dollars per Thousand Cubic Feet |
April, 2009 | 5.71 | -1.14 | Dollars per Thousand Cubic Feet |
May, 2009 | 5.49 | -0.22 | Dollars per Thousand Cubic Feet |
June, 2009 | 5.55 | + 0.06 | Dollars per Thousand Cubic Feet |
July, 2009 | 5.7 | + 0.15 | Dollars per Thousand Cubic Feet |
August, 2009 | 5.61 | -0.09 | Dollars per Thousand Cubic Feet |
September, 2009 | 5.37 | -0.24 | Dollars per Thousand Cubic Feet |
October, 2009 | 5.65 | + 0.28 | Dollars per Thousand Cubic Feet |
November, 2009 | 6.34 | + 0.69 | Dollars per Thousand Cubic Feet |
December, 2009 | 6.22 | -0.12 | Dollars per Thousand Cubic Feet |
January, 2010 | 6.84 | + 0.62 | Dollars per Thousand Cubic Feet |
February, 2010 | 6.64 | -0.2 | Dollars per Thousand Cubic Feet |
March, 2010 | 6.5 | -0.14 | Dollars per Thousand Cubic Feet |
April, 2010 | 5.88 | -0.62 | Dollars per Thousand Cubic Feet |
May, 2010 | 5.81 | -0.07 | Dollars per Thousand Cubic Feet |
June, 2010 | 6.02 | + 0.21 | Dollars per Thousand Cubic Feet |
July, 2010 | 6.31 | + 0.29 | Dollars per Thousand Cubic Feet |
August, 2010 | 6.22 | -0.09 | Dollars per Thousand Cubic Feet |
September, 2010 | 5.72 | -0.5 | Dollars per Thousand Cubic Feet |
October, 2010 | 5.7 | -0.02 | Dollars per Thousand Cubic Feet |
November, 2010 | 5.48 | -0.22 | Dollars per Thousand Cubic Feet |
December, 2010 | 5.74 | + 0.26 | Dollars per Thousand Cubic Feet |
January, 2011 | 5.69 | -0.05 | Dollars per Thousand Cubic Feet |
February, 2011 | 5.75 | + 0.06 | Dollars per Thousand Cubic Feet |
March, 2011 | 5.73 | -0.02 | Dollars per Thousand Cubic Feet |
April, 2011 | 5.62 | -0.11 | Dollars per Thousand Cubic Feet |
May, 2011 | 5.8 | + 0.18 | Dollars per Thousand Cubic Feet |
June, 2011 | 6.12 | + 0.32 | Dollars per Thousand Cubic Feet |
July, 2011 | 6.16 | + 0.04 | Dollars per Thousand Cubic Feet |
August, 2011 | 6.19 | + 0.03 | Dollars per Thousand Cubic Feet |
September, 2011 | 5.94 | -0.25 | Dollars per Thousand Cubic Feet |
October, 2011 | 5.45 | -0.49 | Dollars per Thousand Cubic Feet |
November, 2011 | 5.29 | -0.16 | Dollars per Thousand Cubic Feet |
December, 2011 | 5.03 | -0.26 | Dollars per Thousand Cubic Feet |
January, 2012 | 4.85 | -0.18 | Dollars per Thousand Cubic Feet |
February, 2012 | 4.73 | -0.12 | Dollars per Thousand Cubic Feet |
March, 2012 | 4.84 | + 0.11 | Dollars per Thousand Cubic Feet |
April, 2012 | 4.19 | -0.65 | Dollars per Thousand Cubic Feet |
May, 2012 | 4.3 | + 0.11 | Dollars per Thousand Cubic Feet |
June, 2012 | 4.63 | + 0.33 | Dollars per Thousand Cubic Feet |
July, 2012 | 4.88 | + 0.25 | Dollars per Thousand Cubic Feet |
August, 2012 | 5.13 | + 0.25 | Dollars per Thousand Cubic Feet |
September, 2012 | 4.76 | -0.37 | Dollars per Thousand Cubic Feet |
October, 2012 | 4.65 | -0.11 | Dollars per Thousand Cubic Feet |
November, 2012 | 4.79 | + 0.14 | Dollars per Thousand Cubic Feet |
December, 2012 | 4.79 | 0 | Dollars per Thousand Cubic Feet |
January, 2013 | 4.52 | -0.27 | Dollars per Thousand Cubic Feet |
February, 2013 | 4.56 | + 0.04 | Dollars per Thousand Cubic Feet |
March, 2013 | 4.75 | + 0.19 | Dollars per Thousand Cubic Feet |
April, 2013 | 5.16 | + 0.41 | Dollars per Thousand Cubic Feet |
May, 2013 | 5.55 | + 0.39 | Dollars per Thousand Cubic Feet |
June, 2013 | 5.74 | + 0.19 | Dollars per Thousand Cubic Feet |
July, 2013 | 5.51 | -0.23 | Dollars per Thousand Cubic Feet |
August, 2013 | 5.24 | -0.27 | Dollars per Thousand Cubic Feet |
September, 2013 | 5.21 | -0.03 | Dollars per Thousand Cubic Feet |
October, 2013 | 4.88 | -0.33 | Dollars per Thousand Cubic Feet |
November, 2013 | 4.78 | -0.1 | Dollars per Thousand Cubic Feet |
December, 2013 | 4.93 | + 0.15 | Dollars per Thousand Cubic Feet |
January, 2014 | 5.56 | + 0.63 | Dollars per Thousand Cubic Feet |
February, 2014 | 6.41 | + 0.85 | Dollars per Thousand Cubic Feet |
March, 2014 | 6.57 | + 0.16 | Dollars per Thousand Cubic Feet |
April, 2014 | 5.64 | -0.93 | Dollars per Thousand Cubic Feet |
May, 2014 | 5.9 | + 0.26 | Dollars per Thousand Cubic Feet |
June, 2014 | 6.05 | + 0.15 | Dollars per Thousand Cubic Feet |
July, 2014 | 5.99 | -0.06 | Dollars per Thousand Cubic Feet |
August, 2014 | 5.49 | -0.5 | Dollars per Thousand Cubic Feet |
September, 2014 | 5.51 | + 0.02 | Dollars per Thousand Cubic Feet |
October, 2014 | 5.16 | -0.35 | Dollars per Thousand Cubic Feet |
November, 2014 | 4.91 | -0.25 | Dollars per Thousand Cubic Feet |
December, 2014 | 5.15 | + 0.24 | Dollars per Thousand Cubic Feet |
January, 2015 | 4.48 | -0.67 | Dollars per Thousand Cubic Feet |
February, 2015 | 4.57 | + 0.09 | Dollars per Thousand Cubic Feet |
March, 2015 | 4.35 | -0.22 | Dollars per Thousand Cubic Feet |
April, 2015 | 3.93 | -0.42 | Dollars per Thousand Cubic Feet |
May, 2015 | 4.25 | + 0.32 | Dollars per Thousand Cubic Feet |
June, 2015 | 4.44 | + 0.19 | Dollars per Thousand Cubic Feet |
July, 2015 | 4.65 | + 0.21 | Dollars per Thousand Cubic Feet |
August, 2015 | 4.59 | -0.06 | Dollars per Thousand Cubic Feet |
September, 2015 | 4.56 | -0.03 | Dollars per Thousand Cubic Feet |
October, 2015 | 4 | -0.56 | Dollars per Thousand Cubic Feet |
November, 2015 | 3.69 | -0.31 | Dollars per Thousand Cubic Feet |
December, 2015 | 3.75 | + 0.06 | Dollars per Thousand Cubic Feet |
January, 2016 | 3.39 | -0.36 | Dollars per Thousand Cubic Feet |
February, 2016 | 3.48 | + 0.09 | Dollars per Thousand Cubic Feet |
March, 2016 | 3.49 | + 0.01 | Dollars per Thousand Cubic Feet |
April, 2016 | 3.22 | -0.27 | Dollars per Thousand Cubic Feet |
May, 2016 | 3.44 | + 0.22 | Dollars per Thousand Cubic Feet |
June, 2016 | 3.84 | + 0.4 | Dollars per Thousand Cubic Feet |
July, 2016 | 4.42 | + 0.58 | Dollars per Thousand Cubic Feet |
August, 2016 | 4.33 | -0.09 | Dollars per Thousand Cubic Feet |
September, 2016 | 4.6 | + 0.27 | Dollars per Thousand Cubic Feet |
October, 2016 | 4.19 | -0.41 | Dollars per Thousand Cubic Feet |
November, 2016 | 3.9 | -0.29 | Dollars per Thousand Cubic Feet |
December, 2016 | 3.96 | + 0.06 | Dollars per Thousand Cubic Feet |
January, 2017 | 4.21 | + 0.25 | Dollars per Thousand Cubic Feet |
February, 2017 | 4.13 | -0.08 | Dollars per Thousand Cubic Feet |
March, 2017 | 3.84 | -0.29 | Dollars per Thousand Cubic Feet |
April, 2017 | 4.2 | + 0.36 | Dollars per Thousand Cubic Feet |
May, 2017 | 4.42 | + 0.22 | Dollars per Thousand Cubic Feet |
June, 2017 | 4.82 | + 0.4 | Dollars per Thousand Cubic Feet |
July, 2017 | 4.73 | -0.09 | Dollars per Thousand Cubic Feet |
August, 2017 | 4.61 | -0.12 | Dollars per Thousand Cubic Feet |
September, 2017 | 4.52 | -0.090000000000001 | Dollars per Thousand Cubic Feet |
October, 2017 | 4.03 | -0.49 | Dollars per Thousand Cubic Feet |
November, 2017 | 3.97 | -0.06 | Dollars per Thousand Cubic Feet |
December, 2017 | 4 | + 0.03 | Dollars per Thousand Cubic Feet |
January, 2018 | 4.36 | + 0.36 | Dollars per Thousand Cubic Feet |
February, 2018 | 3.99 | -0.37 | Dollars per Thousand Cubic Feet |
March, 2018 | 3.69 | -0.3 | Dollars per Thousand Cubic Feet |
April, 2018 | 3.65 | -0.04 | Dollars per Thousand Cubic Feet |
May, 2018 | 4.14 | + 0.49 | Dollars per Thousand Cubic Feet |
June, 2018 | 4.49 | + 0.35 | Dollars per Thousand Cubic Feet |
July, 2018 | 4.5 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
August, 2018 | 5.25 | + 0.75 | Dollars per Thousand Cubic Feet |
September, 2018 | 4.72 | -0.53 | Dollars per Thousand Cubic Feet |
October, 2018 | 4.1 | -0.62 | Dollars per Thousand Cubic Feet |
November, 2018 | 4.28 | + 0.18 | Dollars per Thousand Cubic Feet |
December, 2018 | 4.72 | + 0.44 | Dollars per Thousand Cubic Feet |
January, 2019 | 4.03 | -0.69 | Dollars per Thousand Cubic Feet |
February, 2019 | 3.91 | -0.12 | Dollars per Thousand Cubic Feet |
March, 2019 | 4.07 | + 0.16 | Dollars per Thousand Cubic Feet |
April, 2019 | 3.72 | -0.35 | Dollars per Thousand Cubic Feet |
May, 2019 | 3.66 | -0.06 | Dollars per Thousand Cubic Feet |
June, 2019 | 4.17 | + 0.51 | Dollars per Thousand Cubic Feet |
July, 2019 | 4.17 | 0 | Dollars per Thousand Cubic Feet |
August, 2019 | 4.15 | -0.02 | Dollars per Thousand Cubic Feet |
September, 2019 | 4.07 | -0.08 | Dollars per Thousand Cubic Feet |
October, 2019 | 3.42 | -0.65 | Dollars per Thousand Cubic Feet |
November, 2019 | 3.46 | + 0.04 | Dollars per Thousand Cubic Feet |
December, 2019 | 3.5 | + 0.04 | Dollars per Thousand Cubic Feet |
January, 2020 | 3.28 | -0.22 | Dollars per Thousand Cubic Feet |
February, 2020 | 3.1 | -0.18 | Dollars per Thousand Cubic Feet |
March, 2020 | 3.23 | + 0.13 | Dollars per Thousand Cubic Feet |
April, 2020 | 3.05 | -0.18 | Dollars per Thousand Cubic Feet |
May, 2020 | 3.37 | + 0.32 | Dollars per Thousand Cubic Feet |
June, 2020 | 3.85 | + 0.48 | Dollars per Thousand Cubic Feet |
July, 2020 | 3.86 | + 0.0099999999999998 | Dollars per Thousand Cubic Feet |
August, 2020 | 3.96 | + 0.1 | Dollars per Thousand Cubic Feet |
September, 2020 | 4.1 | + 0.14 | Dollars per Thousand Cubic Feet |
October, 2020 | 3.47 | -0.63 | Dollars per Thousand Cubic Feet |
November, 2020 | 3.8 | + 0.33 | Dollars per Thousand Cubic Feet |
December, 2020 | 3.55 | -0.25 | Dollars per Thousand Cubic Feet |
January, 2021 | 3.45 | -0.1 | Dollars per Thousand Cubic Feet |
February, 2021 | 12.43 | + 8.98 | Dollars per Thousand Cubic Feet |
March, 2021 | 4.09 | -8.34 | Dollars per Thousand Cubic Feet |