Year | Value | 2022 | 83.084 | 2021 | 82.873 | 2020 | 82.664 | 2019 | 82.459 | 2018 | 82.256 | 2017 | 82.058 | 2016 | 81.862 | 2015 | 81.671 | 2014 | 81.483 | 2013 | 81.299 | 2012 | 81.119 | 2011 | 80.944 | 2010 | 80.772 | 2009 | 80.606 | 2008 | 80.438 | 2007 | 80.269 | 2006 | 80.099 | 2005 | 79.928 | 2004 | 79.757 | 2003 | 79.583 | 2002 | 79.409 | 2001 | 79.234 | 2000 | 79.057 | 1999 | 78.742 | 1998 | 78.377 | 1997 | 78.008 | 1996 | 77.636 | 1995 | 77.257 | 1994 | 76.875 | 1993 | 76.488 | 1992 | 76.097 | 1991 | 75.701 | 1990 | 75.3 | 1989 | 75.089 | 1988 | 74.942 | 1987 | 74.793 | 1986 | 74.644 | 1985 | 74.494 | 1984 | 74.344 | 1983 | 74.194 | 1982 | 74.042 | 1981 | 73.89 | 1980 | 73.738 | 1979 | 73.692 | 1978 | 73.682 | 1977 | 73.673 | 1976 | 73.663 | 1975 | 73.653 | 1974 | 73.643 | 1973 | 73.633 | 1972 | 73.623 | 1971 | 73.613 | 1970 | 73.602 | 1969 | 73.333 | 1968 | 72.974 | 1967 | 72.612 | 1966 | 72.247 | 1965 | 71.879 | 1964 | 71.508 | 1963 | 71.134 | 1962 | 70.757 | 1961 | 70.377 | 1960 | 69.996 |
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