Year | Value | 2021 | 76.291 | 2020 | 76.914 | 2019 | 76.965 | 2018 | 76.499 | 2017 | 76.319 | 2016 | 76.304 | 2015 | 76.377 | 2014 | 76.396 | 2013 | 76.322 | 2012 | 76.166 | 2011 | 75.856 | 2010 | 75.66 | 2009 | 75.276 | 2008 | 74.832 | 2007 | 74.281 | 2006 | 73.86 | 2005 | 73.407 | 2004 | 72.805 | 2003 | 72.784 | 2002 | 72.694 | 2001 | 72.519 | 2000 | 72.377 | 1999 | 72.246 | 1998 | 71.979 | 1997 | 72.004 | 1996 | 71.85 | 1995 | 71.685 | 1994 | 71.477 | 1993 | 71.194 | 1992 | 70.854 | 1991 | 70.427 | 1990 | 69.901 | 1989 | 69.265 | 1988 | 68.544 | 1987 | 67.782 | 1986 | 67.027 | 1985 | 66.333 | 1984 | 65.749 | 1983 | 65.269 | 1982 | 64.863 | 1981 | 64.484 | 1980 | 64.118 | 1979 | 63.02 | 1978 | 63.259 | 1977 | 62.757 | 1976 | 62.216 | 1975 | 61.641 | 1974 | 61.041 | 1973 | 60.424 | 1972 | 59.795 | 1971 | 59.16 | 1970 | 58.524 | 1969 | 57.894 | 1968 | 57.273 | 1967 | 56.669 | 1966 | 56.038 | 1965 | 55.266 | 1964 | 54.924 | 1963 | 54.128 | 1962 | 53.785 | 1961 | 53.203 | 1960 | 52.609 |
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