1949 | 26.759 | 0 | Million Btu per Short Ton |
1950 | 26.788 | + 0.029 | Million Btu per Short Ton |
1951 | 26.848 | + 0.059999999999999 | Million Btu per Short Ton |
1952 | 26.859 | + 0.011000000000003 | Million Btu per Short Ton |
1953 | 26.881 | + 0.021999999999998 | Million Btu per Short Ton |
1954 | 26.865 | -0.016000000000002 | Million Btu per Short Ton |
1955 | 26.907 | + 0.042000000000002 | Million Btu per Short Ton |
1956 | 26.886 | -0.021000000000001 | Million Btu per Short Ton |
1957 | 26.914 | + 0.028000000000002 | Million Btu per Short Ton |
1958 | 26.931 | + 0.016999999999999 | Million Btu per Short Ton |
1959 | 26.927 | -0.0040000000000013 | Million Btu per Short Ton |
1960 | 26.939 | + 0.012 | Million Btu per Short Ton |
1961 | 26.937 | -0.0019999999999989 | Million Btu per Short Ton |
1962 | 26.928 | -0.0090000000000003 | Million Btu per Short Ton |
1963 | 26.894 | -0.034000000000002 | Million Btu per Short Ton |
1964 | 26.949 | + 0.055000000000003 | Million Btu per Short Ton |
1965 | 26.973 | + 0.023999999999997 | Million Btu per Short Ton |
1966 | 26.976 | + 0.0030000000000001 | Million Btu per Short Ton |
1967 | 26.981 | + 0.0050000000000026 | Million Btu per Short Ton |
1968 | 26.984 | + 0.0030000000000001 | Million Btu per Short Ton |
1969 | 26.982 | -0.0020000000000024 | Million Btu per Short Ton |
1970 | 26.982 | 0 | Million Btu per Short Ton |
1971 | 26.981 | -0.00099999999999767 | Million Btu per Short Ton |
1972 | 26.979 | -0.0020000000000024 | Million Btu per Short Ton |
1973 | 26.596 | -0.383 | Million Btu per Short Ton |
1974 | 26.7 | + 0.104 | Million Btu per Short Ton |
1975 | 26.562 | -0.138 | Million Btu per Short Ton |
1976 | 26.601 | + 0.038999999999998 | Million Btu per Short Ton |
1977 | 26.548 | -0.053000000000001 | Million Btu per Short Ton |
1978 | 26.478 | -0.069999999999997 | Million Btu per Short Ton |
1979 | 26.548 | + 0.069999999999997 | Million Btu per Short Ton |
1980 | 26.384 | -0.164 | Million Btu per Short Ton |
1981 | 26.16 | -0.224 | Million Btu per Short Ton |
1982 | 26.223 | + 0.062999999999999 | Million Btu per Short Ton |
1983 | 26.291 | + 0.068000000000001 | Million Btu per Short Ton |
1984 | 26.402 | + 0.111 | Million Btu per Short Ton |
1985 | 26.307 | -0.095000000000002 | Million Btu per Short Ton |
1986 | 26.292 | -0.014999999999997 | Million Btu per Short Ton |
1987 | 26.291 | -0.0010000000000012 | Million Btu per Short Ton |
1988 | 26.299 | + 0.0079999999999991 | Million Btu per Short Ton |
1989 | 26.16 | -0.139 | Million Btu per Short Ton |
1990 | 26.202 | + 0.042000000000002 | Million Btu per Short Ton |
1991 | 26.188 | -0.014000000000003 | Million Btu per Short Ton |
1992 | 26.161 | -0.026999999999997 | Million Btu per Short Ton |
1993 | 26.335 | + 0.174 | Million Btu per Short Ton |
1994 | 26.329 | -0.0060000000000002 | Million Btu per Short Ton |
1995 | 26.18 | -0.149 | Million Btu per Short Ton |
1996 | 26.174 | -0.0060000000000002 | Million Btu per Short Ton |
1997 | 26.251 | + 0.077000000000002 | Million Btu per Short Ton |
1998 | 26.8 | + 0.549 | Million Btu per Short Ton |
1999 | 26.081 | -0.719 | Million Btu per Short Ton |
2000 | 26.117 | + 0.036000000000001 | Million Btu per Short Ton |
2001 | 25.998 | -0.119 | Million Btu per Short Ton |
2002 | 26.062 | + 0.064 | Million Btu per Short Ton |
2003 | 25.972 | -0.09 | Million Btu per Short Ton |
2004 | 26.108 | + 0.136 | Million Btu per Short Ton |
2005 | 25.494 | -0.614 | Million Btu per Short Ton |
2006 | 25.453 | -0.041 | Million Btu per Short Ton |
2007 | 25.466 | + 0.013000000000002 | Million Btu per Short Ton |
2008 | 25.399 | -0.067 | Million Btu per Short Ton |
2009 | 25.633 | + 0.234 | Million Btu per Short Ton |
2010 | 25.713 | + 0.080000000000002 | Million Btu per Short Ton |
2011 | 25.645 | -0.068000000000001 | Million Btu per Short Ton |
2012 | 24.551 | -1.094 | Million Btu per Short Ton |
2013 | 24.605 | + 0.054000000000002 | Million Btu per Short Ton |
2014 | 25.032 | + 0.427 | Million Btu per Short Ton |
2015 | 25.048 | + 0.015999999999998 | Million Btu per Short Ton |
2016 | 25.655 | + 0.607 | Million Btu per Short Ton |
2017 | 24.628 | -1.027 | Million Btu per Short Ton |
2018 | 24.294 | -0.334 | Million Btu per Short Ton |
2019 | 24.584 | + 0.29 | Million Btu per Short Ton |
2020 | 24.986 | + 0.402 | Million Btu per Short Ton |
2021 | 24.986 | 0 | Million Btu per Short Ton |