Year | Value | 2022 | 91.983 | 2021 | 91.89 | 2020 | 91.798 | 2019 | 91.708 | 2018 | 91.618 | 2017 | 91.53 | 2016 | 91.443 | 2015 | 91.357 | 2014 | 91.273 | 2013 | 91.19 | 2012 | 91.108 | 2011 | 91.028 | 2010 | 90.949 | 2009 | 90.872 | 2008 | 90.795 | 2007 | 90.716 | 2006 | 90.638 | 2005 | 90.558 | 2004 | 90.478 | 2003 | 90.398 | 2002 | 90.316 | 2001 | 90.235 | 2000 | 90.152 | 1999 | 90.038 | 1998 | 89.912 | 1997 | 89.784 | 1996 | 89.655 | 1995 | 89.557 | 1994 | 89.592 | 1993 | 89.627 | 1992 | 89.662 | 1991 | 89.697 | 1990 | 89.731 | 1989 | 89.535 | 1988 | 89.257 | 1987 | 88.971 | 1986 | 88.679 | 1985 | 88.381 | 1984 | 88.076 | 1983 | 87.763 | 1982 | 87.444 | 1981 | 87.117 | 1980 | 86.784 | 1979 | 85.85 | 1978 | 84.651 | 1977 | 83.37 | 1976 | 82.007 | 1975 | 80.554 | 1974 | 79.016 | 1973 | 77.28 | 1972 | 75.021 | 1971 | 72.609 | 1970 | 70.062 | 1969 | 67.384 | 1968 | 64.592 | 1967 | 61.688 | 1966 | 60.231 | 1965 | 58.759 | 1964 | 57.274 | 1963 | 55.771 | 1962 | 54.26 | 1961 | 52.741 | 1960 | 51.219 |
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