Year | Value | 2022 | 92.763 | 2021 | 92.674 | 2020 | 92.587 | 2019 | 92.501 | 2018 | 92.418 | 2017 | 92.336 | 2016 | 92.256 | 2015 | 92.179 | 2014 | 92.104 | 2013 | 92.031 | 2012 | 91.96 | 2011 | 91.892 | 2010 | 91.826 | 2009 | 91.763 | 2008 | 91.702 | 2007 | 91.641 | 2006 | 91.58 | 2005 | 91.518 | 2004 | 91.456 | 2003 | 91.393 | 2002 | 91.33 | 2001 | 91.267 | 2000 | 91.203 | 1999 | 91.139 | 1998 | 91.074 | 1997 | 91.009 | 1996 | 90.943 | 1995 | 90.866 | 1994 | 90.767 | 1993 | 90.666 | 1992 | 90.565 | 1991 | 90.463 | 1990 | 90.359 | 1989 | 90.255 | 1988 | 90.15 | 1987 | 90.044 | 1986 | 89.936 | 1985 | 89.828 | 1984 | 89.719 | 1983 | 89.608 | 1982 | 89.287 | 1981 | 88.94 | 1980 | 88.583 | 1979 | 88.215 | 1978 | 87.838 | 1977 | 87.45 | 1976 | 87.053 | 1975 | 86.643 | 1974 | 86.224 | 1973 | 85.793 | 1972 | 85.351 | 1971 | 84.789 | 1970 | 84.195 | 1969 | 83.582 | 1968 | 82.952 | 1967 | 82.3 | 1966 | 81.63 | 1965 | 80.94 | 1964 | 80.232 | 1963 | 79.502 | 1962 | 78.754 | 1961 | 77.985 | 1960 | 76.848 |
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