Year | Value | 2022 | 96.136 | 2021 | 96.04 | 2020 | 95.939 | 2019 | 95.832 | 2018 | 95.721 | 2017 | 95.603 | 2016 | 95.48 | 2015 | 95.35 | 2014 | 95.213 | 2013 | 95.07 | 2012 | 94.919 | 2011 | 94.761 | 2010 | 94.594 | 2009 | 94.419 | 2008 | 94.239 | 2007 | 94.053 | 2006 | 93.861 | 2005 | 93.664 | 2004 | 93.461 | 2003 | 93.251 | 2002 | 93.036 | 2001 | 92.814 | 2000 | 92.586 | 1999 | 92.228 | 1998 | 91.811 | 1997 | 91.374 | 1996 | 90.917 | 1995 | 90.437 | 1994 | 89.934 | 1993 | 89.409 | 1992 | 88.86 | 1991 | 88.285 | 1990 | 87.685 | 1989 | 87.059 | 1988 | 86.407 | 1987 | 85.726 | 1986 | 85.017 | 1985 | 84.28 | 1984 | 83.514 | 1983 | 82.717 | 1982 | 81.891 | 1981 | 81.034 | 1980 | 80.147 | 1979 | 79.228 | 1978 | 78.278 | 1977 | 77.298 | 1976 | 76.288 | 1975 | 75.245 | 1974 | 74.172 | 1973 | 73.07 | 1972 | 71.941 | 1971 | 70.779 | 1970 | 69.592 | 1969 | 68.378 | 1968 | 67.14 | 1967 | 65.874 | 1966 | 64.587 | 1965 | 63.279 | 1964 | 61.952 | 1963 | 60.604 | 1962 | 59.241 | 1961 | 57.864 | 1960 | 56.477 |
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