Year | Value | 2021 | 65.504 | 2020 | 65.348 | 2019 | 65.295 | 2018 | 64.97 | 2017 | 64.735 | 2016 | 64.514 | 2015 | 64.285 | 2014 | 64.044 | 2013 | 63.816 | 2012 | 63.607 | 2011 | 63.413 | 2010 | 63.243 | 2009 | 63.108 | 2008 | 63.059 | 2007 | 63.064 | 2006 | 63.129 | 2005 | 63.187 | 2004 | 63.209 | 2003 | 63.173 | 2002 | 63.057 | 2001 | 62.879 | 2000 | 62.629 | 1999 | 62.369 | 1998 | 62.12 | 1997 | 61.858 | 1996 | 61.595 | 1995 | 61.322 | 1994 | 61.002 | 1993 | 60.629 | 1992 | 60.195 | 1991 | 59.743 | 1990 | 59.278 | 1989 | 58.764 | 1988 | 58.269 | 1987 | 57.786 | 1986 | 57.348 | 1985 | 56.998 | 1984 | 56.686 | 1983 | 56.398 | 1982 | 56.137 | 1981 | 55.909 | 1980 | 55.701 | 1979 | 55.5 | 1978 | 55.335 | 1977 | 54.483 | 1976 | 55.042 | 1975 | 54.9 | 1974 | 54.72 | 1973 | 54.444 | 1972 | 53.994 | 1971 | 53.619 | 1970 | 53.084 | 1969 | 52.471 | 1968 | 51.826 | 1967 | 51.132 | 1966 | 50.391 | 1965 | 49.662 | 1964 | 48.944 | 1963 | 48.236 | 1962 | 47.567 | 1961 | 47.001 | 1960 | 46.511 |
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