Year | Value | 2022 | 41.771 | 2021 | 42.26 | 2020 | 42.753 | 2019 | 43.25 | 2018 | 43.752 | 2017 | 44.258 | 2016 | 44.765 | 2015 | 45.274 | 2014 | 45.784 | 2013 | 46.294 | 2012 | 46.804 | 2011 | 47.317 | 2010 | 47.829 | 2009 | 48.342 | 2008 | 48.854 | 2007 | 49.343 | 2006 | 49.736 | 2005 | 50.129 | 2004 | 50.521 | 2003 | 50.915 | 2002 | 51.308 | 2001 | 51.7 | 2000 | 52.092 | 1999 | 52.485 | 1998 | 52.877 | 1997 | 53.268 | 1996 | 53.718 | 1995 | 54.504 | 1994 | 55.287 | 1993 | 56.067 | 1992 | 56.844 | 1991 | 57.619 | 1990 | 58.389 | 1989 | 59.155 | 1988 | 59.915 | 1987 | 60.673 | 1986 | 61.325 | 1985 | 61.477 | 1984 | 61.628 | 1983 | 61.779 | 1982 | 61.93 | 1981 | 62.081 | 1980 | 62.231 | 1979 | 62.381 | 1978 | 62.531 | 1977 | 62.681 | 1976 | 62.881 | 1975 | 63.279 | 1974 | 63.676 | 1973 | 64.07 | 1972 | 64.462 | 1971 | 64.853 | 1970 | 65.242 | 1969 | 65.629 | 1968 | 66.013 | 1967 | 66.396 | 1966 | 66.82 | 1965 | 67.418 | 1964 | 68.009 | 1963 | 68.597 | 1962 | 69.177 | 1961 | 69.752 | 1960 | 70.319 |
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