Month | Data | Change | Unit |
---|---|---|---|
November, 1978 | 0.427 | 0 | USD/therms |
December, 1978 | 0.424 | -0.003 | USD/therms |
January, 1979 | 0.416 | -0.008 | USD/therms |
February, 1979 | 0.425 | + 0.009 | USD/therms |
March, 1979 | 0.43 | + 0.005 | USD/therms |
April, 1979 | 0.421 | -0.009 | USD/therms |
May, 1979 | 0.428 | + 0.007 | USD/therms |
June, 1979 | 0.405 | -0.023 | USD/therms |
July, 1979 | 0.398 | -0.007 | USD/therms |
August, 1979 | 0.401 | + 0.003 | USD/therms |
September, 1979 | 0.441 | + 0.04 | USD/therms |
October, 1979 | 0.466 | + 0.025 | USD/therms |
November, 1979 | 0.464 | -0.002 | USD/therms |
December, 1979 | 0.463 | -0.001 | USD/therms |
January, 1980 | 0.457 | -0.006 | USD/therms |
February, 1980 | 0.479 | + 0.022 | USD/therms |
March, 1980 | 0.484 | + 0.005 | USD/therms |
April, 1980 | 0.492 | + 0.008 | USD/therms |
May, 1980 | 0.493 | + 0.001 | USD/therms |
June, 1980 | 0.468 | -0.025 | USD/therms |
July, 1980 | 0.47 | + 0.0019999999999999 | USD/therms |
August, 1980 | 0.453 | -0.017 | USD/therms |
September, 1980 | 0.498 | + 0.045 | USD/therms |
October, 1980 | 0.509 | + 0.011 | USD/therms |
November, 1980 | 0.499 | -0.01 | USD/therms |
December, 1980 | 0.506 | + 0.007 | USD/therms |
January, 1981 | 0.506 | 0 | USD/therms |
February, 1981 | 0.544 | + 0.038 | USD/therms |
March, 1981 | 0.556 | + 0.012 | USD/therms |
April, 1981 | 0.56 | + 0.004 | USD/therms |
May, 1981 | 0.57 | + 0.0099999999999999 | USD/therms |
June, 1981 | 0.54 | -0.03 | USD/therms |
July, 1981 | 0.535 | -0.005 | USD/therms |
August, 1981 | 0.534 | -0.001 | USD/therms |
September, 1981 | 0.576 | + 0.042 | USD/therms |
October, 1981 | 0.597 | + 0.021 | USD/therms |
November, 1981 | 0.582 | -0.015 | USD/therms |
December, 1981 | 0.635 | + 0.053 | USD/therms |
January, 1982 | 0.632 | -0.003 | USD/therms |
February, 1982 | 0.648 | + 0.016 | USD/therms |
March, 1982 | 0.664 | + 0.016 | USD/therms |
April, 1982 | 0.68 | + 0.016 | USD/therms |
May, 1982 | 0.672 | -0.008 | USD/therms |
June, 1982 | 0.641 | -0.031 | USD/therms |
July, 1982 | 0.636 | -0.005 | USD/therms |
August, 1982 | 0.643 | + 0.007 | USD/therms |
September, 1982 | 0.699 | + 0.056 | USD/therms |
October, 1982 | 0.736 | + 0.037 | USD/therms |
November, 1982 | 0.741 | + 0.005 | USD/therms |
December, 1982 | 0.816 | + 0.075 | USD/therms |
January, 1983 | 0.77 | -0.046 | USD/therms |
February, 1983 | 0.786 | + 0.016 | USD/therms |
March, 1983 | 0.803 | + 0.017 | USD/therms |
April, 1983 | 0.842 | + 0.039 | USD/therms |
May, 1983 | 0.827 | -0.015 | USD/therms |
June, 1983 | 0.788 | -0.039 | USD/therms |
July, 1983 | 0.758 | -0.03 | USD/therms |
August, 1983 | 0.779 | + 0.021 | USD/therms |
September, 1983 | 0.836 | + 0.057 | USD/therms |
October, 1983 | 0.779 | -0.057 | USD/therms |
November, 1983 | 0.804 | + 0.025 | USD/therms |
December, 1983 | 0.81 | + 0.006 | USD/therms |
January, 1984 | 0.813 | + 0.0029999999999999 | USD/therms |
February, 1984 | 0.817 | + 0.004 | USD/therms |
March, 1984 | 0.809 | -0.0079999999999999 | USD/therms |
April, 1984 | 0.78 | -0.029 | USD/therms |
May, 1984 | 0.791 | + 0.011 | USD/therms |
June, 1984 | 0.737 | -0.054 | USD/therms |
July, 1984 | 0.759 | + 0.022 | USD/therms |
August, 1984 | 0.763 | + 0.004 | USD/therms |
September, 1984 | 0.803 | + 0.04 | USD/therms |
October, 1984 | 0.791 | -0.012 | USD/therms |
November, 1984 | 0.829 | + 0.038 | USD/therms |
December, 1984 | 0.805 | -0.024 | USD/therms |
January, 1985 | 0.828 | + 0.023 | USD/therms |
February, 1985 | 0.772 | -0.056 | USD/therms |
March, 1985 | 0.811 | + 0.039 | USD/therms |
April, 1985 | 0.748 | -0.063 | USD/therms |
May, 1985 | 0.795 | + 0.047 | USD/therms |
June, 1985 | 0.774 | -0.021 | USD/therms |
July, 1985 | 0.772 | -0.002 | USD/therms |
August, 1985 | 0.748 | -0.024 | USD/therms |
October, 1985 | 0.799 | + 0.051 | USD/therms |
November, 1985 | 0.794 | -0.005 | USD/therms |
December, 1985 | 0.776 | -0.018 | USD/therms |
January, 1986 | 0.765 | -0.011 | USD/therms |
February, 1986 | 0.783 | + 0.018 | USD/therms |
March, 1986 | 0.784 | + 0.001 | USD/therms |
April, 1986 | 0.816 | + 0.032 | USD/therms |
May, 1986 | 0.793 | -0.023 | USD/therms |
June, 1986 | 0.764 | -0.029 | USD/therms |
July, 1986 | 0.757 | -0.007 | USD/therms |
August, 1986 | 0.744 | -0.013 | USD/therms |
September, 1986 | 0.778 | + 0.034 | USD/therms |
October, 1986 | 0.789 | + 0.011 | USD/therms |
November, 1986 | 0.775 | -0.014 | USD/therms |
December, 1986 | 0.784 | + 0.009 | USD/therms |
January, 1987 | 0.789 | + 0.005 | USD/therms |
February, 1987 | 0.773 | -0.016 | USD/therms |
March, 1987 | 0.789 | + 0.016 | USD/therms |
April, 1987 | 0.758 | -0.031 | USD/therms |
May, 1987 | 0.668 | -0.09 | USD/therms |
June, 1987 | 0.654 | -0.014 | USD/therms |
July, 1987 | 0.649 | -0.005 | USD/therms |
August, 1987 | 0.668 | + 0.019 | USD/therms |
September, 1987 | 0.691 | + 0.023 | USD/therms |
October, 1987 | 0.654 | -0.037 | USD/therms |
November, 1987 | 0.677 | + 0.023 | USD/therms |
December, 1987 | 0.684 | + 0.007 | USD/therms |
January, 1988 | 0.682 | -0.002 | USD/therms |
February, 1988 | 0.686 | + 0.004 | USD/therms |
March, 1988 | 0.682 | -0.004 | USD/therms |
April, 1988 | 0.719 | + 0.037 | USD/therms |
May, 1988 | 0.705 | -0.014 | USD/therms |
June, 1988 | 0.674 | -0.031 | USD/therms |
July, 1988 | 0.63 | -0.044 | USD/therms |
August, 1988 | 0.635 | + 0.005 | USD/therms |
September, 1988 | 0.679 | + 0.044 | USD/therms |
October, 1988 | 0.722 | + 0.043 | USD/therms |
November, 1988 | 0.762 | + 0.04 | USD/therms |
December, 1988 | 0.786 | + 0.024 | USD/therms |
January, 1989 | 0.781 | -0.005 | USD/therms |
February, 1989 | 0.779 | -0.002 | USD/therms |
March, 1989 | 0.804 | + 0.025 | USD/therms |
April, 1989 | 0.767 | -0.037 | USD/therms |
May, 1989 | 0.725 | -0.042 | USD/therms |
June, 1989 | 0.686 | -0.039 | USD/therms |
July, 1989 | 0.738 | + 0.052 | USD/therms |
August, 1989 | 0.704 | -0.034 | USD/therms |
September, 1989 | 0.772 | + 0.068 | USD/therms |
October, 1989 | 0.749 | -0.023 | USD/therms |
November, 1989 | 0.76 | + 0.011 | USD/therms |
December, 1989 | 0.772 | + 0.012 | USD/therms |
January, 1990 | 0.799 | + 0.027 | USD/therms |
February, 1990 | 0.814 | + 0.015 | USD/therms |
March, 1990 | 0.791 | -0.023 | USD/therms |
April, 1990 | 0.716 | -0.075 | USD/therms |
May, 1990 | 0.706 | -0.01 | USD/therms |
June, 1990 | 0.595 | -0.111 | USD/therms |
July, 1990 | 0.596 | + 0.001 | USD/therms |
August, 1990 | 0.602 | + 0.006 | USD/therms |
September, 1990 | 0.754 | + 0.152 | USD/therms |
October, 1990 | 0.744 | -0.01 | USD/therms |
November, 1990 | 0.741 | -0.003 | USD/therms |
December, 1990 | 0.748 | + 0.007 | USD/therms |
January, 1991 | 0.752 | + 0.004 | USD/therms |
February, 1991 | 0.781 | + 0.029 | USD/therms |
March, 1991 | 0.74 | -0.041 | USD/therms |
April, 1991 | 0.749 | + 0.009 | USD/therms |
May, 1991 | 0.706 | -0.043 | USD/therms |
June, 1991 | 0.661 | -0.045 | USD/therms |
July, 1991 | 0.65 | -0.011 | USD/therms |
August, 1991 | 0.64 | -0.01 | USD/therms |
September, 1991 | 0.694 | + 0.054 | USD/therms |
October, 1991 | 0.691 | -0.003 | USD/therms |
November, 1991 | 0.695 | + 0.004 | USD/therms |
December, 1991 | 0.727 | + 0.032 | USD/therms |
January, 1992 | 0.747 | + 0.02 | USD/therms |
February, 1992 | 0.733 | -0.014 | USD/therms |
March, 1992 | 0.706 | -0.027 | USD/therms |
April, 1992 | 0.662 | -0.044 | USD/therms |
May, 1992 | 0.685 | + 0.023 | USD/therms |
June, 1992 | 0.691 | + 0.0059999999999999 | USD/therms |
July, 1992 | 0.696 | + 0.005 | USD/therms |
August, 1992 | 0.699 | + 0.003 | USD/therms |
September, 1992 | 0.747 | + 0.048 | USD/therms |
October, 1992 | 0.777 | + 0.03 | USD/therms |
November, 1992 | 0.794 | + 0.017 | USD/therms |
December, 1992 | 0.836 | + 0.042 | USD/therms |
January, 1993 | 0.866 | + 0.03 | USD/therms |
February, 1993 | 0.857 | -0.009 | USD/therms |
March, 1993 | 0.835 | -0.022 | USD/therms |
April, 1993 | 0.842 | + 0.007 | USD/therms |
May, 1993 | 0.859 | + 0.017 | USD/therms |
June, 1993 | 0.846 | -0.013 | USD/therms |
July, 1993 | 0.86 | + 0.014 | USD/therms |
August, 1993 | 0.878 | + 0.018 | USD/therms |
September, 1993 | 0.84 | -0.038 | USD/therms |
October, 1993 | 0.828 | -0.012 | USD/therms |
November, 1993 | 0.85 | + 0.022 | USD/therms |
December, 1993 | 0.838 | -0.012 | USD/therms |
January, 1994 | 0.827 | -0.011 | USD/therms |
February, 1994 | 0.834 | + 0.007 | USD/therms |
March, 1994 | 0.851 | + 0.017 | USD/therms |
April, 1994 | 0.85 | -0.001 | USD/therms |
May, 1994 | 0.86 | + 0.01 | USD/therms |
June, 1994 | 0.843 | -0.017 | USD/therms |
July, 1994 | 0.797 | -0.046 | USD/therms |
August, 1994 | 0.817 | + 0.02 | USD/therms |
September, 1994 | 0.81 | -0.0069999999999999 | USD/therms |
October, 1994 | 0.837 | + 0.027 | USD/therms |
November, 1994 | 0.828 | -0.009 | USD/therms |
December, 1994 | 0.84 | + 0.012 | USD/therms |
January, 1995 | 0.837 | -0.003 | USD/therms |
February, 1995 | 0.841 | + 0.004 | USD/therms |
March, 1995 | 0.819 | -0.022 | USD/therms |
April, 1995 | 0.862 | + 0.043 | USD/therms |
May, 1995 | 0.857 | -0.005 | USD/therms |
June, 1995 | 0.793 | -0.064 | USD/therms |
July, 1995 | 0.784 | -0.009 | USD/therms |
August, 1995 | 0.795 | + 0.011 | USD/therms |
September, 1995 | 0.824 | + 0.029 | USD/therms |
October, 1995 | 0.807 | -0.017 | USD/therms |
November, 1995 | 0.777 | -0.03 | USD/therms |
December, 1995 | 0.943 | + 0.166 | USD/therms |
January, 1996 | 0.948 | + 0.005 | USD/therms |
February, 1996 | 0.97 | + 0.022 | USD/therms |
March, 1996 | 1.02 | + 0.05 | USD/therms |
April, 1996 | 1.041 | + 0.021 | USD/therms |
May, 1996 | 1.013 | -0.028 | USD/therms |
June, 1996 | 1.077 | + 0.064 | USD/therms |
July, 1996 | 1.04 | -0.037 | USD/therms |
August, 1996 | 1.034 | -0.006 | USD/therms |
September, 1996 | 0.999 | -0.035 | USD/therms |
October, 1996 | 1.022 | + 0.023 | USD/therms |
November, 1996 | 1.019 | -0.0030000000000001 | USD/therms |
December, 1996 | 1.169 | + 0.15 | USD/therms |
January, 1997 | 1.2 | + 0.031 | USD/therms |
February, 1997 | 1.135 | -0.065 | USD/therms |
March, 1997 | 1.086 | -0.049 | USD/therms |
April, 1997 | 1.087 | + 0.00099999999999989 | USD/therms |
May, 1997 | 1.089 | + 0.002 | USD/therms |
June, 1997 | 1.076 | -0.013 | USD/therms |
July, 1997 | 1.048 | -0.028 | USD/therms |
August, 1997 | 1.05 | + 0.002 | USD/therms |
September, 1997 | 1.123 | + 0.073 | USD/therms |
October, 1997 | 1.169 | + 0.046 | USD/therms |
November, 1997 | 1.24 | + 0.071 | USD/therms |
December, 1997 | 1.106 | -0.134 | USD/therms |
January, 2010 | 1.318 | + 0.212 | USD/therms |
February, 2010 | 1.358 | + 0.04 | USD/therms |
March, 2010 | 1.303 | -0.055 | USD/therms |
April, 2010 | 1.244 | -0.059 | USD/therms |
May, 2010 | 1.211 | -0.033 | USD/therms |
June, 2010 | 1.307 | + 0.096 | USD/therms |
July, 2010 | 1.489 | + 0.182 | USD/therms |
August, 2010 | 1.492 | + 0.0029999999999999 | USD/therms |
September, 2010 | 1.253 | -0.239 | USD/therms |
October, 2010 | 1.254 | + 0.0010000000000001 | USD/therms |
November, 2010 | 1.23 | -0.024 | USD/therms |
December, 2010 | 1.192 | -0.038 | USD/therms |
January, 2011 | 1.218 | + 0.026 | USD/therms |
February, 2011 | 1.215 | -0.0029999999999999 | USD/therms |
March, 2011 | 1.23 | + 0.015 | USD/therms |
April, 2011 | 1.193 | -0.037 | USD/therms |
May, 2011 | 1.192 | -0.0010000000000001 | USD/therms |
June, 2011 | 1.213 | + 0.021 | USD/therms |
July, 2011 | 1.238 | + 0.025 | USD/therms |
August, 2011 | 1.292 | + 0.054 | USD/therms |
September, 2011 | 1.182 | -0.11 | USD/therms |
October, 2011 | 1.182 | 0 | USD/therms |
November, 2011 | 1.196 | + 0.014 | USD/therms |
December, 2011 | 1.264 | + 0.068 | USD/therms |
January, 2012 | 1.243 | -0.021 | USD/therms |
February, 2012 | 1.191 | -0.052 | USD/therms |
March, 2012 | 1.094 | -0.097 | USD/therms |
April, 2012 | 1.166 | + 0.072 | USD/therms |
May, 2012 | 1.104 | -0.062 | USD/therms |
June, 2012 | 1.188 | + 0.084 | USD/therms |
July, 2012 | 1.124 | -0.064 | USD/therms |
August, 2012 | 1.228 | + 0.104 | USD/therms |
September, 2012 | 1.073 | -0.155 | USD/therms |
October, 2012 | 1.038 | -0.035 | USD/therms |
November, 2012 | 1.118 | + 0.08 | USD/therms |
December, 2012 | 1.108 | -0.01 | USD/therms |
January, 2013 | 1.116 | + 0.008 | USD/therms |
February, 2013 | 1.141 | + 0.025 | USD/therms |
March, 2013 | 1.11 | -0.031 | USD/therms |
April, 2013 | 1.219 | + 0.109 | USD/therms |
May, 2013 | 1.223 | + 0.004 | USD/therms |
June, 2013 | 1.213 | -0.01 | USD/therms |
July, 2013 | 1.153 | -0.06 | USD/therms |
August, 2013 | 1.026 | -0.127 | USD/therms |
September, 2013 | 1.062 | + 0.036 | USD/therms |
October, 2013 | 1.097 | + 0.035 | USD/therms |
November, 2013 | 1.119 | + 0.022 | USD/therms |
December, 2013 | 1.105 | -0.014 | USD/therms |
January, 2014 | 1.148 | + 0.043 | USD/therms |
February, 2014 | 1.19 | + 0.042 | USD/therms |
March, 2014 | 1.453 | + 0.263 | USD/therms |
April, 2014 | 1.331 | -0.122 | USD/therms |
May, 2014 | 1.238 | -0.093 | USD/therms |
June, 2014 | 1.242 | + 0.004 | USD/therms |
July, 2014 | 1.21 | -0.032 | USD/therms |
August, 2014 | 1.093 | -0.117 | USD/therms |
September, 2014 | 1.111 | + 0.018 | USD/therms |
October, 2014 | 1.107 | -0.004 | USD/therms |
November, 2014 | 1.108 | + 0.0010000000000001 | USD/therms |
December, 2014 | 1.14 | + 0.032 | USD/therms |
January, 2015 | 1.136 | -0.004 | USD/therms |
February, 2015 | 1.073 | -0.063 | USD/therms |
March, 2015 | 1.211 | + 0.138 | USD/therms |
April, 2015 | 1.168 | -0.043 | USD/therms |
May, 2015 | 1.175 | + 0.0070000000000001 | USD/therms |
June, 2015 | 1.05 | -0.125 | USD/therms |
July, 2015 | 0.995 | -0.055 | USD/therms |
August, 2015 | 1.035 | + 0.04 | USD/therms |
September, 2015 | 1.049 | + 0.014 | USD/therms |
October, 2015 | 1.046 | -0.0029999999999999 | USD/therms |
November, 2015 | 1 | -0.046 | USD/therms |
December, 2015 | 0.95 | -0.05 | USD/therms |
January, 2016 | 0.92 | -0.03 | USD/therms |
February, 2016 | 0.951 | + 0.031 | USD/therms |
March, 2016 | 1.027 | + 0.076 | USD/therms |
April, 2016 | 0.978 | -0.049 | USD/therms |
May, 2016 | 1.009 | + 0.031 | USD/therms |
June, 2016 | 1.086 | + 0.077 | USD/therms |
July, 2016 | 1.149 | + 0.063 | USD/therms |
August, 2016 | 1.067 | -0.082 | USD/therms |
September, 2016 | 1.032 | -0.035 | USD/therms |
October, 2016 | 1.038 | + 0.006 | USD/therms |
November, 2016 | 1.179 | + 0.141 | USD/therms |
December, 2016 | 1.109 | -0.07 | USD/therms |
January, 2017 | 1.147 | + 0.038 | USD/therms |
February, 2017 | 1.216 | + 0.069 | USD/therms |
March, 2017 | 1.248 | + 0.032 | USD/therms |
April, 2017 | 1.281 | + 0.033 | USD/therms |
May, 2017 | 1.382 | + 0.101 | USD/therms |
June, 2017 | 1.424 | + 0.042 | USD/therms |
July, 2017 | 1.416 | -0.008 | USD/therms |
August, 2017 | 1.362 | -0.054 | USD/therms |
September, 2017 | 1.218 | -0.144 | USD/therms |
October, 2017 | 1.206 | -0.012 | USD/therms |
November, 2017 | 1.199 | -0.0069999999999999 | USD/therms |
December, 2017 | 1.184 | -0.015 | USD/therms |
January, 2018 | 1.186 | + 0.002 | USD/therms |
February, 2018 | 1.241 | + 0.055 | USD/therms |
March, 2018 | 1.139 | -0.102 | USD/therms |
April, 2018 | 1.159 | + 0.02 | USD/therms |
May, 2018 | 1.2 | + 0.041 | USD/therms |
June, 2018 | 1.165 | -0.035 | USD/therms |
July, 2018 | 1.088 | -0.077 | USD/therms |
August, 2018 | 1.173 | + 0.085 | USD/therms |
September, 2018 | 0.592 | -0.581 | USD/therms |
October, 2018 | 0.918 | + 0.326 | USD/therms |
November, 2018 | 1.04 | + 0.122 | USD/therms |
December, 2018 | 1.156 | + 0.116 | USD/therms |
January, 2019 | 1.26 | + 0.104 | USD/therms |
February, 2019 | 1.281 | + 0.021 | USD/therms |
March, 2019 | 1.26 | -0.021 | USD/therms |
April, 2019 | 1.29 | + 0.03 | USD/therms |
May, 2019 | 1.276 | -0.014 | USD/therms |
June, 2019 | 1.272 | -0.004 | USD/therms |
July, 2019 | 1.256 | -0.016 | USD/therms |
August, 2019 | 1.337 | + 0.081 | USD/therms |
September, 2019 | 1.126 | -0.211 | USD/therms |
October, 2019 | 1.184 | + 0.058 | USD/therms |
November, 2019 | 1.195 | + 0.011 | USD/therms |
December, 2019 | 1.24 | + 0.045 | USD/therms |
January, 2020 | 1.246 | + 0.006 | USD/therms |
February, 2020 | 1.18 | -0.066 | USD/therms |
March, 2020 | 1.156 | -0.024 | USD/therms |
April, 2020 | 1.215 | + 0.059 | USD/therms |
May, 2020 | 1.255 | + 0.04 | USD/therms |
June, 2020 | 1.309 | + 0.054 | USD/therms |
July, 2020 | 1.333 | + 0.024 | USD/therms |
August, 2020 | 1.13 | -0.203 | USD/therms |
September, 2020 | 1.181 | + 0.051 | USD/therms |
October, 2020 | 1.217 | + 0.036 | USD/therms |
November, 2020 | 1.221 | + 0.004 | USD/therms |
December, 2020 | 1.147 | -0.074 | USD/therms |
January, 2021 | 1.194 | + 0.047 | USD/therms |
February, 2021 | 1.212 | + 0.018 | USD/therms |
March, 2021 | 1.37 | + 0.158 | USD/therms |
April, 2021 | 1.465 | + 0.095 | USD/therms |
May, 2021 | 1.478 | + 0.013 | USD/therms |
June, 2021 | 1.553 | + 0.075 | USD/therms |
Year | Year Open - Year Close | Year Min - Year Max | Year Average | Year Change |
---|---|---|---|---|
2021 | 1.194 - 1.553 | 1.194 - 1.553 | 1.38 | + 0.36 |
2020 | 1.246 - 1.147 | 1.13 - 1.333 | 1.22 | -0.1 |
2019 | 1.26 - 1.24 | 1.126 - 1.337 | 1.25 | -0.02 |
2018 | 1.186 - 1.156 | 0.592 - 1.241 | 1.09 | -0.03 |
2017 | 1.147 - 1.184 | 1.147 - 1.424 | 1.27 | + 0.04 |
2016 | 0.92 - 1.109 | 0.92 - 1.179 | 1.05 | + 0.19 |
2015 | 1.136 - 0.95 | 0.95 - 1.211 | 1.07 | -0.19 |
2014 | 1.148 - 1.14 | 1.093 - 1.453 | 1.2 | -0.01 |
2013 | 1.116 - 1.105 | 1.026 - 1.223 | 1.13 | -0.01 |
2012 | 1.243 - 1.108 | 1.038 - 1.243 | 1.14 | -0.14 |
2011 | 1.218 - 1.264 | 1.182 - 1.292 | 1.22 | + 0.05 |
2010 | 1.318 - 1.192 | 1.192 - 1.492 | 1.3 | -0.13 |
1997 | 1.2 - 1.106 | 1.048 - 1.24 | 1.12 | -0.09 |
1996 | 0.948 - 1.169 | 0.948 - 1.169 | 1.03 | + 0.22 |
1995 | 0.837 - 0.943 | 0.777 - 0.943 | 0.83 | + 0.11 |
1994 | 0.827 - 0.84 | 0.797 - 0.86 | 0.83 | + 0.01 |
1993 | 0.866 - 0.838 | 0.828 - 0.878 | 0.85 | -0.03 |
1992 | 0.747 - 0.836 | 0.662 - 0.836 | 0.73 | + 0.09 |
1991 | 0.752 - 0.727 | 0.64 - 0.781 | 0.71 | -0.03 |
1990 | 0.799 - 0.748 | 0.595 - 0.814 | 0.72 | -0.05 |
1989 | 0.781 - 0.772 | 0.686 - 0.804 | 0.75 | -0.01 |
1988 | 0.682 - 0.786 | 0.63 - 0.786 | 0.7 | + 0.1 |
1987 | 0.789 - 0.684 | 0.649 - 0.789 | 0.7 | -0.11 |
1986 | 0.765 - 0.784 | 0.744 - 0.816 | 0.78 | + 0.02 |
1985 | 0.828 - 0.776 | 0.748 - 0.828 | 0.78 | -0.05 |
1984 | 0.813 - 0.805 | 0.737 - 0.829 | 0.79 | -0.01 |
1983 | 0.77 - 0.81 | 0.758 - 0.842 | 0.8 | + 0.04 |
1982 | 0.632 - 0.816 | 0.632 - 0.816 | 0.68 | + 0.18 |
1981 | 0.506 - 0.635 | 0.506 - 0.635 | 0.56 | + 0.13 |
1980 | 0.457 - 0.506 | 0.453 - 0.509 | 0.48 | + 0.05 |
1979 | 0.416 - 0.463 | 0.398 - 0.466 | 0.43 | + 0.05 |
1978 | 0.427 - 0.424 | 0.424 - 0.427 | 0.43 | -0 |