Year | Value | 2021 | 70.262 | 2020 | 73.182 | 2019 | 73.621 | 2018 | 73.568 | 2017 | 73.644 | 2016 | 73.534 | 2015 | 73.191 | 2014 | 72.878 | 2013 | 72.757 | 2012 | 72.454 | 2011 | 72.131 | 2010 | 71.887 | 2009 | 71.635 | 2008 | 71.384 | 2007 | 71.106 | 2006 | 70.781 | 2005 | 70.527 | 2004 | 70.481 | 2003 | 70.297 | 2002 | 70.025 | 2001 | 69.9 | 2000 | 69.75 | 1999 | 69.634 | 1998 | 69.478 | 1997 | 69.325 | 1996 | 69.202 | 1995 | 69.009 | 1994 | 68.824 | 1993 | 68.633 | 1992 | 68.395 | 1991 | 68.173 | 1990 | 67.944 | 1989 | 67.469 | 1988 | 67.319 | 1987 | 67.012 | 1986 | 66.656 | 1985 | 66.315 | 1984 | 65.966 | 1983 | 65.614 | 1982 | 65.385 | 1981 | 65.023 | 1980 | 64.749 | 1979 | 64.448 | 1978 | 64.132 | 1977 | 63.941 | 1976 | 63.705 | 1975 | 63.445 | 1974 | 63.233 | 1973 | 63.066 | 1972 | 62.935 | 1971 | 62.803 | 1970 | 62.684 | 1969 | 62.499 | 1968 | 62.319 | 1967 | 62.153 | 1966 | 61.988 | 1965 | 61.819 | 1964 | 61.583 | 1963 | 61.334 | 1962 | 61.058 | 1961 | 60.755 | 1960 | 60.423 |
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