Year | Value | 2022 | 41.385 | 2021 | 42.015 | 2020 | 42.651 | 2019 | 43.293 | 2018 | 43.94 | 2017 | 44.593 | 2016 | 45.251 | 2015 | 45.914 | 2014 | 46.581 | 2013 | 47.252 | 2012 | 47.927 | 2011 | 48.606 | 2010 | 49.287 | 2009 | 49.969 | 2008 | 50.649 | 2007 | 51.331 | 2006 | 52.012 | 2005 | 52.692 | 2004 | 53.37 | 2003 | 54.049 | 2002 | 54.725 | 2001 | 55.399 | 2000 | 56.071 | 1999 | 56.816 | 1998 | 57.582 | 1997 | 58.346 | 1996 | 59.104 | 1995 | 59.86 | 1994 | 60.61 | 1993 | 61.356 | 1992 | 62.095 | 1991 | 62.83 | 1990 | 63.559 | 1989 | 64.281 | 1988 | 64.996 | 1987 | 65.707 | 1986 | 66.409 | 1985 | 67.104 | 1984 | 67.791 | 1983 | 68.158 | 1982 | 68.386 | 1981 | 68.612 | 1980 | 68.837 | 1979 | 69.062 | 1978 | 69.286 | 1977 | 69.508 | 1976 | 69.73 | 1975 | 69.951 | 1974 | 70.171 | 1973 | 70.39 | 1972 | 70.608 | 1971 | 70.826 | 1970 | 71.042 | 1969 | 71.527 | 1968 | 72.14 | 1967 | 72.746 | 1966 | 73.344 | 1965 | 73.933 | 1964 | 74.512 | 1963 | 75.085 | 1962 | 75.648 | 1961 | 76.203 | 1960 | 76.748 |
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