Year | Value | 2022 | 53.163 | 2021 | 53.765 | 2020 | 54.362 | 2019 | 54.954 | 2018 | 55.54 | 2017 | 56.12 | 2016 | 56.693 | 2015 | 57.26 | 2014 | 57.82 | 2013 | 58.373 | 2012 | 58.918 | 2011 | 59.456 | 2010 | 59.987 | 2009 | 60.509 | 2008 | 61.024 | 2007 | 61.53 | 2006 | 62.029 | 2005 | 62.519 | 2004 | 63 | 2003 | 63.474 | 2002 | 63.945 | 2001 | 64.413 | 2000 | 64.878 | 1999 | 65.341 | 1998 | 65.801 | 1997 | 66.258 | 1996 | 66.711 | 1995 | 67.162 | 1994 | 67.61 | 1993 | 68.054 | 1992 | 68.494 | 1991 | 68.933 | 1990 | 69.367 | 1989 | 69.798 | 1988 | 70.225 | 1987 | 70.65 | 1986 | 71.07 | 1985 | 71.487 | 1984 | 71.9 | 1983 | 72.16 | 1982 | 72.417 | 1981 | 72.673 | 1980 | 72.928 | 1979 | 73.181 | 1978 | 73.433 | 1977 | 73.683 | 1976 | 73.932 | 1975 | 74.179 | 1974 | 74.425 | 1973 | 74.669 | 1972 | 74.911 | 1971 | 75.153 | 1970 | 75.392 | 1969 | 75.63 | 1968 | 75.866 | 1967 | 76.101 | 1966 | 76.334 | 1965 | 76.566 | 1964 | 76.796 | 1963 | 77.024 | 1962 | 77.251 | 1961 | 77.477 | 1960 | 77.7 |
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