Year | Value | 2022 | 64.596 | 2021 | 64.065 | 2020 | 63.532 | 2019 | 62.994 | 2018 | 62.453 | 2017 | 61.908 | 2016 | 61.36 | 2015 | 60.809 | 2014 | 60.256 | 2013 | 59.7 | 2012 | 59.142 | 2011 | 58.581 | 2010 | 58.018 | 2009 | 57.452 | 2008 | 56.886 | 2007 | 56.317 | 2006 | 55.746 | 2005 | 55.174 | 2004 | 54.644 | 2003 | 54.317 | 2002 | 53.99 | 2001 | 53.662 | 2000 | 53.335 | 1999 | 53.007 | 1998 | 52.678 | 1997 | 52.35 | 1996 | 52.022 | 1995 | 51.692 | 1994 | 51.295 | 1993 | 50.569 | 1992 | 49.844 | 1991 | 49.117 | 1990 | 48.391 | 1989 | 47.666 | 1988 | 46.943 | 1987 | 46.219 | 1986 | 45.498 | 1985 | 44.779 | 1984 | 44.063 | 1983 | 43.347 | 1982 | 42.634 | 1981 | 41.92 | 1980 | 41.21 | 1979 | 40.502 | 1978 | 39.798 | 1977 | 39.099 | 1976 | 38.405 | 1975 | 37.714 | 1974 | 37.029 | 1973 | 36.349 | 1972 | 35.675 | 1971 | 35.012 | 1970 | 34.477 | 1969 | 33.946 | 1968 | 33.419 | 1967 | 32.896 | 1966 | 32.377 | 1965 | 31.862 | 1964 | 31.353 | 1963 | 30.846 | 1962 | 30.345 | 1961 | 29.849 | 1960 | 29.357 |
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