Year | Value | 2022 | 80.95 | 2021 | 81.06 | 2020 | 81.159 | 2019 | 81.246 | 2018 | 81.322 | 2017 | 81.388 | 2016 | 81.442 | 2015 | 81.485 | 2014 | 81.518 | 2013 | 81.539 | 2012 | 81.55 | 2011 | 81.55 | 2010 | 81.55 | 2009 | 80.787 | 2008 | 79.869 | 2007 | 78.916 | 2006 | 77.932 | 2005 | 76.915 | 2004 | 75.867 | 2003 | 74.784 | 2002 | 73.671 | 2001 | 72.527 | 2000 | 72.226 | 1999 | 72.029 | 1998 | 71.832 | 1997 | 71.634 | 1996 | 71.435 | 1995 | 71.235 | 1994 | 71.035 | 1993 | 70.833 | 1992 | 70.631 | 1991 | 70.428 | 1990 | 70.651 | 1989 | 70.939 | 1988 | 71.226 | 1987 | 71.512 | 1986 | 71.795 | 1985 | 72.077 | 1984 | 72.357 | 1983 | 72.636 | 1982 | 72.913 | 1981 | 73.188 | 1980 | 73.46 | 1979 | 73.732 | 1978 | 74.002 | 1977 | 74.27 | 1976 | 74.535 | 1975 | 74.8 | 1974 | 75.062 | 1973 | 75.323 | 1972 | 75.581 | 1971 | 75.838 | 1970 | 76.093 | 1969 | 76.346 | 1968 | 76.597 | 1967 | 76.847 | 1966 | 77.095 | 1965 | 77.34 | 1964 | 77.584 | 1963 | 77.826 | 1962 | 78.066 | 1961 | 78.304 | 1960 | 78.54 |
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