Year | Value | 2022 | 88.367 | 2021 | 88.24 | 2020 | 88.116 | 2019 | 87.994 | 2018 | 87.874 | 2017 | 87.757 | 2016 | 87.642 | 2015 | 87.526 | 2014 | 87.41 | 2013 | 87.292 | 2012 | 87.142 | 2011 | 86.957 | 2010 | 86.795 | 2009 | 86.654 | 2008 | 86.487 | 2007 | 86.293 | 2006 | 86.098 | 2005 | 85.856 | 2004 | 85.566 | 2003 | 85.36 | 2002 | 85.25 | 2001 | 85.15 | 2000 | 85.1 | 1999 | 85.086 | 1998 | 85.06 | 1997 | 85.033 | 1996 | 85.006 | 1995 | 84.979 | 1994 | 84.952 | 1993 | 84.925 | 1992 | 84.898 | 1991 | 84.871 | 1990 | 84.843 | 1989 | 84.777 | 1988 | 84.671 | 1987 | 84.565 | 1986 | 84.458 | 1985 | 84.351 | 1984 | 84.243 | 1983 | 84.134 | 1982 | 84.025 | 1981 | 83.915 | 1980 | 83.723 | 1979 | 83.448 | 1978 | 83.169 | 1977 | 82.886 | 1976 | 82.6 | 1975 | 82.146 | 1974 | 81.683 | 1973 | 81.211 | 1972 | 80.731 | 1971 | 80.239 | 1970 | 79.737 | 1969 | 79.222 | 1968 | 78.698 | 1967 | 78.163 | 1966 | 77.619 | 1965 | 77.048 | 1964 | 76.409 | 1963 | 75.757 | 1962 | 75.093 | 1961 | 74.417 | 1960 | 73.687 |
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