Year | Value | 2022 | 95.091 | 2021 | 95.015 | 2020 | 94.938 | 2019 | 94.859 | 2018 | 94.78 | 2017 | 94.699 | 2016 | 94.617 | 2015 | 94.534 | 2014 | 94.449 | 2013 | 94.364 | 2012 | 94.277 | 2011 | 94.188 | 2010 | 94.099 | 2009 | 94.008 | 2008 | 93.916 | 2007 | 93.822 | 2006 | 93.727 | 2005 | 93.631 | 2004 | 93.534 | 2003 | 93.435 | 2002 | 93.334 | 2001 | 93.233 | 2000 | 93.129 | 1999 | 92.946 | 1998 | 92.733 | 1997 | 92.513 | 1996 | 92.287 | 1995 | 92.055 | 1994 | 91.816 | 1993 | 91.571 | 1992 | 91.32 | 1991 | 91.061 | 1990 | 90.796 | 1989 | 91.002 | 1988 | 91.354 | 1987 | 91.695 | 1986 | 92.023 | 1985 | 92.339 | 1984 | 92.643 | 1983 | 92.937 | 1982 | 93.219 | 1981 | 93.491 | 1980 | 93.753 | 1979 | 92.737 | 1978 | 91.036 | 1977 | 88.983 | 1976 | 86.534 | 1975 | 83.632 | 1974 | 80.252 | 1973 | 76.371 | 1972 | 71.999 | 1971 | 67.153 | 1970 | 61.92 | 1969 | 59.784 | 1968 | 58.738 | 1967 | 57.68 | 1966 | 56.617 | 1965 | 55.548 | 1964 | 54.475 | 1963 | 53.396 | 1962 | 52.314 | 1961 | 51.23 | 1960 | 50.147 |
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