Year | Value | 2021 | 76.359 | 2020 | 80.225 | 2019 | 80.075 | 2018 | 80.051 | 2017 | 80.071 | 2016 | 80.111 | 2015 | 80.148 | 2014 | 80.166 | 2013 | 80.157 | 2012 | 80.122 | 2011 | 80.063 | 2010 | 79.99 | 2009 | 79.898 | 2008 | 79.798 | 2007 | 79.694 | 2006 | 79.578 | 2005 | 79.453 | 2004 | 79.321 | 2003 | 79.183 | 2002 | 79.022 | 2001 | 78.831 | 2000 | 78.595 | 1999 | 78.315 | 1998 | 78.003 | 1997 | 77.671 | 1996 | 77.361 | 1995 | 77.08 | 1994 | 76.851 | 1993 | 76.672 | 1992 | 76.531 | 1991 | 76.408 | 1990 | 76.297 | 1989 | 76.179 | 1988 | 76.058 | 1987 | 75.927 | 1986 | 75.799 | 1985 | 75.672 | 1984 | 75.55 | 1983 | 75.429 | 1982 | 75.259 | 1981 | 75.106 | 1980 | 74.929 | 1979 | 74.586 | 1978 | 74.303 | 1977 | 73.942 | 1976 | 73.505 | 1975 | 72.998 | 1974 | 72.448 | 1973 | 71.884 | 1972 | 71.328 | 1971 | 70.798 | 1970 | 70.295 | 1969 | 69.849 | 1968 | 69.429 | 1967 | 69.025 | 1966 | 68.619 | 1965 | 68.205 | 1964 | 67.767 | 1963 | 66.63 | 1962 | 66.843 | 1961 | 66.374 | 1960 | 65.94 |
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