Year | Value | 2022 | 76.363 | 2021 | 76.025 | 2020 | 75.686 | 2019 | 75.347 | 2018 | 75.008 | 2017 | 74.669 | 2016 | 74.329 | 2015 | 73.99 | 2014 | 73.651 | 2013 | 73.313 | 2012 | 72.975 | 2011 | 72.638 | 2010 | 72.302 | 2009 | 71.963 | 2008 | 71.622 | 2007 | 71.278 | 2006 | 70.932 | 2005 | 70.584 | 2004 | 70.233 | 2003 | 69.879 | 2002 | 69.524 | 2001 | 69.166 | 2000 | 68.899 | 1999 | 68.677 | 1998 | 68.454 | 1997 | 68.231 | 1996 | 68.007 | 1995 | 67.782 | 1994 | 67.557 | 1993 | 67.33 | 1992 | 67.056 | 1991 | 66.717 | 1990 | 66.377 | 1989 | 66.035 | 1988 | 65.692 | 1987 | 65.346 | 1986 | 64.999 | 1985 | 64.59 | 1984 | 64.099 | 1983 | 63.603 | 1982 | 63.104 | 1981 | 62.603 | 1980 | 62.1 | 1979 | 61.216 | 1978 | 60.326 | 1977 | 59.428 | 1976 | 58.526 | 1975 | 57.562 | 1974 | 56.519 | 1973 | 55.471 | 1972 | 54.419 | 1971 | 53.36 | 1970 | 52.3 | 1969 | 51.034 | 1968 | 49.768 | 1967 | 48.499 | 1966 | 47.233 | 1965 | 45.755 | 1964 | 43.987 | 1963 | 42.23 | 1962 | 40.494 | 1961 | 38.782 | 1960 | 37.1 |
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