Month | Data | Change | Unit |
---|---|---|---|
November, 1978 | 0.397 | 0 | USD/therm |
December, 1978 | 0.396 | -0.001 | USD/therm |
January, 1979 | 0.402 | + 0.006 | USD/therm |
February, 1979 | 0.403 | + 0.001 | USD/therm |
March, 1979 | 0.406 | + 0.003 | USD/therm |
April, 1979 | 0.408 | + 0.0019999999999999 | USD/therm |
May, 1979 | 0.407 | -0.001 | USD/therm |
June, 1979 | 0.415 | + 0.008 | USD/therm |
July, 1979 | 0.372 | -0.043 | USD/therm |
August, 1979 | 0.384 | + 0.012 | USD/therm |
September, 1979 | 0.381 | -0.003 | USD/therm |
October, 1979 | 0.428 | + 0.047 | USD/therm |
November, 1979 | 0.427 | -0.001 | USD/therm |
December, 1979 | 0.43 | + 0.003 | USD/therm |
January, 1980 | 0.421 | -0.009 | USD/therm |
February, 1980 | 0.44 | + 0.019 | USD/therm |
March, 1980 | 0.442 | + 0.002 | USD/therm |
April, 1980 | 0.458 | + 0.016 | USD/therm |
May, 1980 | 0.461 | + 0.003 | USD/therm |
June, 1980 | 0.456 | -0.005 | USD/therm |
July, 1980 | 0.474 | + 0.018 | USD/therm |
August, 1980 | 0.48 | + 0.006 | USD/therm |
September, 1980 | 0.477 | -0.003 | USD/therm |
October, 1980 | 0.485 | + 0.008 | USD/therm |
November, 1980 | 0.492 | + 0.007 | USD/therm |
December, 1980 | 0.488 | -0.004 | USD/therm |
January, 1981 | 0.506 | + 0.018 | USD/therm |
February, 1981 | 0.502 | -0.004 | USD/therm |
March, 1981 | 0.527 | + 0.025 | USD/therm |
April, 1981 | 0.512 | -0.015 | USD/therm |
May, 1981 | 0.516 | + 0.004 | USD/therm |
June, 1981 | 0.522 | + 0.006 | USD/therm |
July, 1981 | 0.491 | -0.031 | USD/therm |
August, 1981 | 0.51 | + 0.019 | USD/therm |
September, 1981 | 0.592 | + 0.082 | USD/therm |
October, 1981 | 0.595 | + 0.003 | USD/therm |
November, 1981 | 0.592 | -0.003 | USD/therm |
December, 1981 | 0.585 | -0.007 | USD/therm |
January, 1982 | 0.584 | -0.001 | USD/therm |
February, 1982 | 0.594 | + 0.01 | USD/therm |
March, 1982 | 0.603 | + 0.009 | USD/therm |
April, 1982 | 0.634 | + 0.031 | USD/therm |
May, 1982 | 0.624 | -0.01 | USD/therm |
June, 1982 | 0.625 | + 0.001 | USD/therm |
July, 1982 | 0.621 | -0.004 | USD/therm |
August, 1982 | 0.633 | + 0.012 | USD/therm |
September, 1982 | 0.64 | + 0.007 | USD/therm |
October, 1982 | 0.706 | + 0.066 | USD/therm |
November, 1982 | 0.705 | -0.001 | USD/therm |
December, 1982 | 0.703 | -0.002 | USD/therm |
January, 1983 | 0.71 | + 0.007 | USD/therm |
February, 1983 | 0.727 | + 0.017 | USD/therm |
March, 1983 | 0.725 | -0.002 | USD/therm |
April, 1983 | 0.727 | + 0.002 | USD/therm |
May, 1983 | 0.727 | 0 | USD/therm |
June, 1983 | 0.731 | + 0.004 | USD/therm |
July, 1983 | 0.783 | + 0.052 | USD/therm |
August, 1983 | 0.781 | -0.002 | USD/therm |
September, 1983 | 0.783 | + 0.002 | USD/therm |
October, 1983 | 0.798 | + 0.015 | USD/therm |
November, 1983 | 0.795 | -0.003 | USD/therm |
December, 1983 | 0.781 | -0.014 | USD/therm |
January, 1984 | 0.791 | + 0.01 | USD/therm |
February, 1984 | 0.804 | + 0.013 | USD/therm |
March, 1984 | 0.801 | -0.003 | USD/therm |
April, 1984 | 0.778 | -0.023 | USD/therm |
May, 1984 | 0.782 | + 0.004 | USD/therm |
June, 1984 | 0.82 | + 0.038 | USD/therm |
July, 1984 | 0.818 | -0.002 | USD/therm |
August, 1984 | 0.878 | + 0.06 | USD/therm |
September, 1984 | 0.881 | + 0.003 | USD/therm |
October, 1984 | 0.88 | -0.001 | USD/therm |
November, 1984 | 0.859 | -0.021 | USD/therm |
December, 1984 | 0.858 | -0.001 | USD/therm |
January, 1985 | 0.857 | -0.001 | USD/therm |
February, 1985 | 0.783 | -0.074 | USD/therm |
March, 1985 | 0.8 | + 0.017 | USD/therm |
April, 1985 | 0.792 | -0.008 | USD/therm |
May, 1985 | 0.78 | -0.012 | USD/therm |
June, 1985 | 0.745 | -0.035 | USD/therm |
July, 1985 | 0.748 | + 0.003 | USD/therm |
August, 1985 | 0.732 | -0.016 | USD/therm |
October, 1985 | 0.713 | -0.019 | USD/therm |
November, 1985 | 0.731 | + 0.018 | USD/therm |
December, 1985 | 0.772 | + 0.041 | USD/therm |
January, 1986 | 0.757 | -0.015 | USD/therm |
February, 1986 | 0.776 | + 0.019 | USD/therm |
March, 1986 | 0.758 | -0.018 | USD/therm |
April, 1986 | 0.773 | + 0.015 | USD/therm |
May, 1986 | 0.762 | -0.011 | USD/therm |
June, 1986 | 0.758 | -0.004 | USD/therm |
July, 1986 | 0.758 | 0 | USD/therm |
August, 1986 | 0.755 | -0.003 | USD/therm |
September, 1986 | 0.76 | + 0.005 | USD/therm |
October, 1986 | 0.759 | -0.001 | USD/therm |
November, 1986 | 0.764 | + 0.005 | USD/therm |
December, 1986 | 0.761 | -0.003 | USD/therm |
January, 1987 | 0.765 | + 0.004 | USD/therm |
February, 1987 | 0.753 | -0.012 | USD/therm |
March, 1987 | 0.757 | + 0.004 | USD/therm |
April, 1987 | 0.685 | -0.072 | USD/therm |
May, 1987 | 0.687 | + 0.002 | USD/therm |
June, 1987 | 0.685 | -0.002 | USD/therm |
July, 1987 | 0.693 | + 0.0079999999999999 | USD/therm |
August, 1987 | 0.694 | + 0.001 | USD/therm |
September, 1987 | 0.639 | -0.055 | USD/therm |
October, 1987 | 0.635 | -0.004 | USD/therm |
November, 1987 | 0.629 | -0.006 | USD/therm |
December, 1987 | 0.635 | + 0.006 | USD/therm |
January, 1988 | 0.618 | -0.017 | USD/therm |
February, 1988 | 0.614 | -0.004 | USD/therm |
March, 1988 | 0.643 | + 0.029 | USD/therm |
April, 1988 | 0.646 | + 0.003 | USD/therm |
May, 1988 | 0.647 | + 0.001 | USD/therm |
June, 1988 | 0.632 | -0.015 | USD/therm |
July, 1988 | 0.623 | -0.009 | USD/therm |
August, 1988 | 0.608 | -0.015 | USD/therm |
September, 1988 | 0.63 | + 0.022 | USD/therm |
October, 1988 | 0.631 | + 0.001 | USD/therm |
November, 1988 | 0.659 | + 0.028 | USD/therm |
December, 1988 | 0.67 | + 0.011 | USD/therm |
January, 1989 | 0.691 | + 0.021 | USD/therm |
February, 1989 | 0.695 | + 0.004 | USD/therm |
March, 1989 | 0.681 | -0.014 | USD/therm |
April, 1989 | 0.681 | 0 | USD/therm |
May, 1989 | 0.673 | -0.008 | USD/therm |
June, 1989 | 0.668 | -0.005 | USD/therm |
July, 1989 | 0.669 | + 0.001 | USD/therm |
August, 1989 | 0.631 | -0.038 | USD/therm |
September, 1989 | 0.633 | + 0.002 | USD/therm |
October, 1989 | 0.637 | + 0.004 | USD/therm |
November, 1989 | 0.639 | + 0.002 | USD/therm |
December, 1989 | 0.647 | + 0.008 | USD/therm |
January, 1990 | 0.644 | -0.003 | USD/therm |
February, 1990 | 0.668 | + 0.024 | USD/therm |
March, 1990 | 0.655 | -0.013 | USD/therm |
April, 1990 | 0.627 | -0.028 | USD/therm |
May, 1990 | 0.626 | -0.001 | USD/therm |
June, 1990 | 0.635 | + 0.009 | USD/therm |
July, 1990 | 0.642 | + 0.007 | USD/therm |
August, 1990 | 0.634 | -0.008 | USD/therm |
September, 1990 | 0.635 | + 0.001 | USD/therm |
October, 1990 | 0.636 | + 0.001 | USD/therm |
November, 1990 | 0.657 | + 0.021 | USD/therm |
December, 1990 | 0.653 | -0.004 | USD/therm |
January, 1991 | 0.65 | -0.003 | USD/therm |
February, 1991 | 0.637 | -0.013 | USD/therm |
March, 1991 | 0.652 | + 0.015 | USD/therm |
April, 1991 | 0.637 | -0.015 | USD/therm |
May, 1991 | 0.609 | -0.028 | USD/therm |
June, 1991 | 0.609 | 0 | USD/therm |
July, 1991 | 0.589 | -0.02 | USD/therm |
August, 1991 | 0.578 | -0.011 | USD/therm |
September, 1991 | 0.584 | + 0.006 | USD/therm |
October, 1991 | 0.589 | + 0.005 | USD/therm |
November, 1991 | 0.608 | + 0.019 | USD/therm |
December, 1991 | 0.641 | + 0.033 | USD/therm |
January, 1992 | 0.635 | -0.006 | USD/therm |
February, 1992 | 0.641 | + 0.006 | USD/therm |
March, 1992 | 0.621 | -0.02 | USD/therm |
April, 1992 | 0.609 | -0.012 | USD/therm |
May, 1992 | 0.609 | 0 | USD/therm |
June, 1992 | 0.618 | + 0.009 | USD/therm |
July, 1992 | 0.627 | + 0.009 | USD/therm |
August, 1992 | 0.636 | + 0.009 | USD/therm |
September, 1992 | 0.654 | + 0.018 | USD/therm |
October, 1992 | 0.659 | + 0.005 | USD/therm |
November, 1992 | 0.696 | + 0.037 | USD/therm |
December, 1992 | 0.722 | + 0.026 | USD/therm |
January, 1993 | 0.742 | + 0.02 | USD/therm |
February, 1993 | 0.723 | -0.019 | USD/therm |
March, 1993 | 0.681 | -0.042 | USD/therm |
April, 1993 | 0.686 | + 0.005 | USD/therm |
May, 1993 | 0.673 | -0.013 | USD/therm |
June, 1993 | 0.689 | + 0.016 | USD/therm |
July, 1993 | 0.715 | + 0.026 | USD/therm |
August, 1993 | 0.715 | 0 | USD/therm |
September, 1993 | 0.672 | -0.043 | USD/therm |
October, 1993 | 0.676 | + 0.004 | USD/therm |
November, 1993 | 0.684 | + 0.008 | USD/therm |
December, 1993 | 0.65 | -0.034 | USD/therm |
January, 1994 | 0.686 | + 0.036 | USD/therm |
February, 1994 | 0.691 | + 0.0049999999999999 | USD/therm |
March, 1994 | 0.705 | + 0.014 | USD/therm |
April, 1994 | 0.713 | + 0.008 | USD/therm |
May, 1994 | 0.701 | -0.012 | USD/therm |
June, 1994 | 0.644 | -0.057 | USD/therm |
July, 1994 | 0.62 | -0.024 | USD/therm |
August, 1994 | 0.615 | -0.005 | USD/therm |
September, 1994 | 0.609 | -0.006 | USD/therm |
October, 1994 | 0.577 | -0.032 | USD/therm |
November, 1994 | 0.531 | -0.046 | USD/therm |
December, 1994 | 0.59 | + 0.059 | USD/therm |
January, 1995 | 0.604 | + 0.014 | USD/therm |
February, 1995 | 0.605 | + 0.001 | USD/therm |
March, 1995 | 0.607 | + 0.002 | USD/therm |
April, 1995 | 0.607 | 0 | USD/therm |
May, 1995 | 0.595 | -0.012 | USD/therm |
June, 1995 | 0.594 | -0.001 | USD/therm |
July, 1995 | 0.618 | + 0.024 | USD/therm |
August, 1995 | 0.607 | -0.011 | USD/therm |
September, 1995 | 0.607 | 0 | USD/therm |
October, 1995 | 0.595 | -0.012 | USD/therm |
November, 1995 | 0.646 | + 0.051 | USD/therm |
December, 1995 | 0.677 | + 0.031 | USD/therm |
January, 1996 | 0.727 | + 0.05 | USD/therm |
February, 1996 | 0.765 | + 0.038 | USD/therm |
March, 1996 | 0.765 | 0 | USD/therm |
April, 1996 | 0.765 | 0 | USD/therm |
May, 1996 | 0.74 | -0.025 | USD/therm |
June, 1996 | 0.721 | -0.019 | USD/therm |
July, 1996 | 0.717 | -0.004 | USD/therm |
August, 1996 | 0.717 | 0 | USD/therm |
September, 1996 | 0.719 | + 0.002 | USD/therm |
October, 1996 | 0.663 | -0.056 | USD/therm |
November, 1996 | 0.697 | + 0.034 | USD/therm |
December, 1996 | 0.731 | + 0.034 | USD/therm |
January, 1997 | 0.806 | + 0.075 | USD/therm |
February, 1997 | 0.897 | + 0.091 | USD/therm |
March, 1997 | 0.913 | + 0.016 | USD/therm |
April, 1997 | 0.731 | -0.182 | USD/therm |
May, 1997 | 0.701 | -0.03 | USD/therm |
June, 1997 | 0.702 | + 0.001 | USD/therm |
July, 1997 | 0.692 | -0.01 | USD/therm |
August, 1997 | 0.723 | + 0.031 | USD/therm |
September, 1997 | 0.745 | + 0.022 | USD/therm |
October, 1997 | 0.809 | + 0.064 | USD/therm |
November, 1997 | 0.829 | + 0.02 | USD/therm |
December, 1997 | 0.768 | -0.061 | USD/therm |
January, 2010 | 1.146 | + 0.378 | USD/therm |
February, 2010 | 1.038 | -0.108 | USD/therm |
March, 2010 | 1.044 | + 0.006 | USD/therm |
April, 2010 | 0.945 | -0.099 | USD/therm |
May, 2010 | 1.063 | + 0.118 | USD/therm |
June, 2010 | 1.047 | -0.016 | USD/therm |
July, 2010 | 1.093 | + 0.046 | USD/therm |
August, 2010 | 1.114 | + 0.021 | USD/therm |
September, 2010 | 1.016 | -0.098 | USD/therm |
October, 2010 | 1.025 | + 0.0089999999999999 | USD/therm |
November, 2010 | 1.018 | -0.0069999999999999 | USD/therm |
December, 2010 | 1.089 | + 0.071 | USD/therm |
January, 2011 | 1.098 | + 0.0090000000000001 | USD/therm |
February, 2011 | 1.028 | -0.07 | USD/therm |
March, 2011 | 0.973 | -0.055 | USD/therm |
April, 2011 | 0.981 | + 0.008 | USD/therm |
May, 2011 | 0.997 | + 0.016 | USD/therm |
June, 2011 | 1.008 | + 0.011 | USD/therm |
July, 2011 | 1.024 | + 0.016 | USD/therm |
August, 2011 | 1.022 | -0.002 | USD/therm |
September, 2011 | 0.968 | -0.054 | USD/therm |
October, 2011 | 0.961 | -0.007 | USD/therm |
November, 2011 | 0.976 | + 0.015 | USD/therm |
December, 2011 | 0.988 | + 0.012 | USD/therm |
January, 2012 | 1.036 | + 0.048 | USD/therm |
February, 2012 | 1.068 | + 0.032 | USD/therm |
March, 2012 | 1.086 | + 0.018 | USD/therm |
April, 2012 | 1.131 | + 0.045 | USD/therm |
May, 2012 | 0.983 | -0.148 | USD/therm |
June, 2012 | 1.035 | + 0.052 | USD/therm |
July, 2012 | 1.073 | + 0.038 | USD/therm |
August, 2012 | 1.101 | + 0.028 | USD/therm |
September, 2012 | 1.053 | -0.048 | USD/therm |
October, 2012 | 1.091 | + 0.038 | USD/therm |
November, 2012 | 1.058 | -0.033 | USD/therm |
December, 2012 | 1.082 | + 0.024 | USD/therm |
January, 2013 | 1.017 | -0.065 | USD/therm |
February, 2013 | 1.034 | + 0.017 | USD/therm |
March, 2013 | 1.065 | + 0.031 | USD/therm |
April, 2013 | 1.143 | + 0.078 | USD/therm |
May, 2013 | 1.162 | + 0.019 | USD/therm |
June, 2013 | 1.169 | + 0.0070000000000001 | USD/therm |
July, 2013 | 1.119 | -0.05 | USD/therm |
August, 2013 | 0.97 | -0.149 | USD/therm |
September, 2013 | 1.034 | + 0.064 | USD/therm |
October, 2013 | 1.034 | 0 | USD/therm |
November, 2013 | 1.072 | + 0.038 | USD/therm |
December, 2013 | 1.09 | + 0.018 | USD/therm |
January, 2014 | 1.026 | -0.064 | USD/therm |
February, 2014 | 1.133 | + 0.107 | USD/therm |
March, 2014 | 1.012 | -0.121 | USD/therm |
April, 2014 | 0.958 | -0.054 | USD/therm |
May, 2014 | 0.987 | + 0.029 | USD/therm |
June, 2014 | 0.994 | + 0.007 | USD/therm |
July, 2014 | 0.989 | -0.005 | USD/therm |
August, 2014 | 0.912 | -0.077 | USD/therm |
September, 2014 | 0.916 | + 0.004 | USD/therm |
October, 2014 | 0.916 | 0 | USD/therm |
November, 2014 | 0.998 | + 0.082 | USD/therm |
December, 2014 | 1.095 | + 0.097 | USD/therm |
January, 2015 | 1.126 | + 0.031 | USD/therm |
February, 2015 | 1.123 | -0.0029999999999999 | USD/therm |
March, 2015 | 1.021 | -0.102 | USD/therm |
April, 2015 | 0.893 | -0.128 | USD/therm |
May, 2015 | 0.885 | -0.008 | USD/therm |
June, 2015 | 0.909 | + 0.024 | USD/therm |
July, 2015 | 0.915 | + 0.006 | USD/therm |
August, 2015 | 0.91 | -0.005 | USD/therm |
September, 2015 | 0.901 | -0.009 | USD/therm |
October, 2015 | 0.887 | -0.014 | USD/therm |
November, 2015 | 0.945 | + 0.058 | USD/therm |
December, 2015 | 0.959 | + 0.014 | USD/therm |
January, 2016 | 0.959 | 0 | USD/therm |
February, 2016 | 0.985 | + 0.026 | USD/therm |
March, 2016 | 0.949 | -0.036 | USD/therm |
April, 2016 | 0.903 | -0.046 | USD/therm |
May, 2016 | 1.006 | + 0.103 | USD/therm |
June, 2016 | 0.987 | -0.019 | USD/therm |
July, 2016 | 1.151 | + 0.164 | USD/therm |
August, 2016 | 1.17 | + 0.019 | USD/therm |
September, 2016 | 1.146 | -0.024 | USD/therm |
October, 2016 | 1.086 | -0.06 | USD/therm |
November, 2016 | 1.038 | -0.048 | USD/therm |
December, 2016 | 1.108 | + 0.07 | USD/therm |
January, 2017 | 1.165 | + 0.057 | USD/therm |
February, 2017 | 1.142 | -0.023 | USD/therm |
March, 2017 | 1.16 | + 0.018 | USD/therm |
April, 2017 | 1.234 | + 0.074 | USD/therm |
May, 2017 | 1.22 | -0.014 | USD/therm |
June, 2017 | 1.243 | + 0.023 | USD/therm |
July, 2017 | 1.229 | -0.014 | USD/therm |
August, 2017 | 1.232 | + 0.0029999999999999 | USD/therm |
September, 2017 | 1.236 | + 0.004 | USD/therm |
October, 2017 | 1.214 | -0.022 | USD/therm |
November, 2017 | 1.203 | -0.011 | USD/therm |
December, 2017 | 1.235 | + 0.032 | USD/therm |
January, 2018 | 1.263 | + 0.028 | USD/therm |
February, 2018 | 1.234 | -0.029 | USD/therm |
March, 2018 | 1.088 | -0.146 | USD/therm |
April, 2018 | 1.152 | + 0.064 | USD/therm |
May, 2018 | 1.057 | -0.095 | USD/therm |
June, 2018 | 1.058 | + 0.0010000000000001 | USD/therm |
July, 2018 | 1.025 | -0.033 | USD/therm |
August, 2018 | 1.012 | -0.013 | USD/therm |
September, 2018 | 1.025 | + 0.013 | USD/therm |
October, 2018 | 1.031 | + 0.006 | USD/therm |
November, 2018 | 1.095 | + 0.064 | USD/therm |
December, 2018 | 1.151 | + 0.056 | USD/therm |
January, 2019 | 1.149 | -0.002 | USD/therm |
February, 2019 | 1.141 | -0.008 | USD/therm |
March, 2019 | 1.109 | -0.032 | USD/therm |
April, 2019 | 1.095 | -0.014 | USD/therm |
May, 2019 | 1.058 | -0.037 | USD/therm |
June, 2019 | 1.164 | + 0.106 | USD/therm |
July, 2019 | 1.044 | -0.12 | USD/therm |
August, 2019 | 1.13 | + 0.086 | USD/therm |
September, 2019 | 1.031 | -0.099 | USD/therm |
October, 2019 | 1.126 | + 0.095 | USD/therm |
November, 2019 | 1.305 | + 0.179 | USD/therm |
December, 2019 | 1.268 | -0.037 | USD/therm |
January, 2020 | 1.347 | + 0.079 | USD/therm |
February, 2020 | 1.383 | + 0.036 | USD/therm |
March, 2020 | 1.328 | -0.055 | USD/therm |
April, 2020 | 1.344 | + 0.016 | USD/therm |
May, 2020 | 1.367 | + 0.023 | USD/therm |
June, 2020 | 1.36 | -0.0069999999999999 | USD/therm |
July, 2020 | 1.343 | -0.017 | USD/therm |
August, 2020 | 1.372 | + 0.029 | USD/therm |
September, 2020 | 1.388 | + 0.016 | USD/therm |
October, 2020 | 1.357 | -0.031 | USD/therm |
November, 2020 | 1.413 | + 0.056 | USD/therm |
December, 2020 | 1.474 | + 0.061 | USD/therm |
January, 2021 | 1.402 | -0.072 | USD/therm |
February, 2021 | 1.386 | -0.016 | USD/therm |
March, 2021 | 1.413 | + 0.027 | USD/therm |
April, 2021 | 1.424 | + 0.011 | USD/therm |
May, 2021 | 1.446 | + 0.022 | USD/therm |
June, 2021 | 1.465 | + 0.019 | USD/therm |
Year | Year Open - Year Close | Year Min - Year Max | Year Average | Year Change |
---|---|---|---|---|
2021 | 1.402 - 1.465 | 1.386 - 1.465 | 1.42 | + 0.06 |
2020 | 1.347 - 1.474 | 1.328 - 1.474 | 1.37 | + 0.13 |
2019 | 1.149 - 1.268 | 1.031 - 1.305 | 1.14 | + 0.12 |
2018 | 1.263 - 1.151 | 1.012 - 1.263 | 1.1 | -0.11 |
2017 | 1.165 - 1.235 | 1.142 - 1.243 | 1.21 | + 0.07 |
2016 | 0.959 - 1.108 | 0.903 - 1.17 | 1.04 | + 0.15 |
2015 | 1.126 - 0.959 | 0.885 - 1.126 | 0.96 | -0.17 |
2014 | 1.026 - 1.095 | 0.912 - 1.133 | 0.99 | + 0.07 |
2013 | 1.017 - 1.09 | 0.97 - 1.169 | 1.08 | + 0.07 |
2012 | 1.036 - 1.082 | 0.983 - 1.131 | 1.07 | + 0.05 |
2011 | 1.098 - 0.988 | 0.961 - 1.098 | 1 | -0.11 |
2010 | 1.146 - 1.089 | 0.945 - 1.146 | 1.05 | -0.06 |
1997 | 0.806 - 0.768 | 0.692 - 0.913 | 0.78 | -0.04 |
1996 | 0.727 - 0.731 | 0.663 - 0.765 | 0.73 | 0 |
1995 | 0.604 - 0.677 | 0.594 - 0.677 | 0.61 | + 0.07 |
1994 | 0.686 - 0.59 | 0.531 - 0.713 | 0.64 | -0.1 |
1993 | 0.742 - 0.65 | 0.65 - 0.742 | 0.69 | -0.09 |
1992 | 0.635 - 0.722 | 0.609 - 0.722 | 0.64 | + 0.09 |
1991 | 0.65 - 0.641 | 0.578 - 0.652 | 0.62 | -0.01 |
1990 | 0.644 - 0.653 | 0.626 - 0.668 | 0.64 | + 0.01 |
1989 | 0.691 - 0.647 | 0.631 - 0.695 | 0.66 | -0.04 |
1988 | 0.618 - 0.67 | 0.608 - 0.67 | 0.64 | + 0.05 |
1987 | 0.765 - 0.635 | 0.629 - 0.765 | 0.69 | -0.13 |
1986 | 0.757 - 0.761 | 0.755 - 0.776 | 0.76 | 0 |
1985 | 0.857 - 0.772 | 0.713 - 0.857 | 0.77 | -0.09 |
1984 | 0.791 - 0.858 | 0.778 - 0.881 | 0.83 | + 0.07 |
1983 | 0.71 - 0.781 | 0.71 - 0.798 | 0.76 | + 0.07 |
1982 | 0.584 - 0.703 | 0.584 - 0.706 | 0.64 | + 0.12 |
1981 | 0.506 - 0.585 | 0.491 - 0.595 | 0.54 | + 0.08 |
1980 | 0.421 - 0.488 | 0.421 - 0.492 | 0.46 | + 0.07 |
1979 | 0.402 - 0.43 | 0.372 - 0.43 | 0.41 | + 0.03 |
1978 | 0.397 - 0.396 | 0.396 - 0.397 | 0.4 | -0 |