Year | Value | 2022 | 98.153 | 2021 | 98.117 | 2020 | 98.079 | 2019 | 98.041 | 2018 | 98.001 | 2017 | 97.961 | 2016 | 97.919 | 2015 | 97.876 | 2014 | 97.833 | 2013 | 97.789 | 2012 | 97.744 | 2011 | 97.698 | 2010 | 97.651 | 2009 | 97.603 | 2008 | 97.555 | 2007 | 97.505 | 2006 | 97.454 | 2005 | 97.403 | 2004 | 97.35 | 2003 | 97.296 | 2002 | 97.241 | 2001 | 97.186 | 2000 | 97.129 | 1999 | 97.065 | 1998 | 96.996 | 1997 | 96.924 | 1996 | 96.851 | 1995 | 96.777 | 1994 | 96.7 | 1993 | 96.622 | 1992 | 96.542 | 1991 | 96.461 | 1990 | 96.377 | 1989 | 96.292 | 1988 | 96.204 | 1987 | 96.115 | 1986 | 96.023 | 1985 | 95.93 | 1984 | 95.835 | 1983 | 95.737 | 1982 | 95.637 | 1981 | 95.535 | 1980 | 95.381 | 1979 | 95.196 | 1978 | 95.005 | 1977 | 94.806 | 1976 | 94.6 | 1975 | 94.48 | 1974 | 94.358 | 1973 | 94.233 | 1972 | 94.106 | 1971 | 93.976 | 1970 | 93.843 | 1969 | 93.707 | 1968 | 93.569 | 1967 | 93.428 | 1966 | 93.284 | 1965 | 93.137 | 1964 | 92.988 | 1963 | 92.835 | 1962 | 92.679 | 1961 | 92.554 | 1960 | 92.46 |
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