Year | Value | 2022 | 94.047 | 2021 | 93.834 | 2020 | 93.605 | 2019 | 93.36 | 2018 | 93.098 | 2017 | 92.817 | 2016 | 92.517 | 2015 | 92.195 | 2014 | 91.851 | 2013 | 91.483 | 2012 | 91.09 | 2011 | 90.668 | 2010 | 90.228 | 2009 | 89.77 | 2008 | 89.294 | 2007 | 88.797 | 2006 | 88.281 | 2005 | 87.745 | 2004 | 87.188 | 2003 | 86.608 | 2002 | 86.007 | 2001 | 85.362 | 2000 | 84.55 | 1999 | 83.7 | 1998 | 82.814 | 1997 | 81.89 | 1996 | 80.93 | 1995 | 79.928 | 1994 | 78.888 | 1993 | 77.81 | 1992 | 76.694 | 1991 | 75.537 | 1990 | 74.343 | 1989 | 72.716 | 1988 | 70.99 | 1987 | 69.197 | 1986 | 67.345 | 1985 | 65.439 | 1984 | 63.484 | 1983 | 61.478 | 1982 | 59.435 | 1981 | 57.358 | 1980 | 55.259 | 1979 | 54.632 | 1978 | 54.24 | 1977 | 53.848 | 1976 | 53.456 | 1975 | 53.063 | 1974 | 52.669 | 1973 | 52.275 | 1972 | 51.882 | 1971 | 51.487 | 1970 | 51.106 | 1969 | 50.763 | 1968 | 50.42 | 1967 | 50.077 | 1966 | 49.734 | 1965 | 49.392 | 1964 | 49.049 | 1963 | 48.706 | 1962 | 48.364 | 1961 | 48.021 | 1960 | 47.679 |
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