Year | Value | 2022 | 72.325 | 2021 | 71.925 | 2020 | 71.518 | 2019 | 71.104 | 2018 | 70.683 | 2017 | 70.256 | 2016 | 69.821 | 2015 | 69.379 | 2014 | 68.931 | 2013 | 68.479 | 2012 | 68.024 | 2011 | 67.565 | 2010 | 67.102 | 2009 | 66.624 | 2008 | 65.969 | 2007 | 65.306 | 2006 | 64.638 | 2005 | 63.965 | 2004 | 63.341 | 2003 | 62.987 | 2002 | 62.632 | 2001 | 62.276 | 2000 | 61.919 | 1999 | 61.559 | 1998 | 61.199 | 1997 | 60.838 | 1996 | 60.475 | 1995 | 60.288 | 1994 | 60.146 | 1993 | 60.004 | 1992 | 59.862 | 1991 | 59.719 | 1990 | 59.577 | 1989 | 59.434 | 1988 | 59.286 | 1987 | 59.135 | 1986 | 58.985 | 1985 | 58.834 | 1984 | 58.683 | 1983 | 58.532 | 1982 | 58.197 | 1981 | 57.812 | 1980 | 57.426 | 1979 | 57.039 | 1978 | 56.651 | 1977 | 56.262 | 1976 | 55.873 | 1975 | 55.165 | 1974 | 54.382 | 1973 | 53.597 | 1972 | 52.811 | 1971 | 52.022 | 1970 | 51.232 | 1969 | 50.442 | 1968 | 49.156 | 1967 | 47.646 | 1966 | 46.142 | 1965 | 44.646 | 1964 | 43.161 | 1963 | 41.684 | 1962 | 40.224 | 1961 | 38.781 | 1960 | 37.36 |
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