Year | Value | 2022 | 40.444 | 2021 | 40.723 | 2020 | 40.988 | 2019 | 41.24 | 2018 | 41.478 | 2017 | 41.701 | 2016 | 41.91 | 2015 | 42.105 | 2014 | 42.3 | 2013 | 42.495 | 2012 | 42.691 | 2011 | 42.887 | 2010 | 43.083 | 2009 | 43.279 | 2008 | 43.475 | 2007 | 43.672 | 2006 | 43.868 | 2005 | 44.065 | 2004 | 44.218 | 2003 | 44.367 | 2002 | 44.516 | 2001 | 44.665 | 2000 | 44.815 | 1999 | 44.964 | 1998 | 45.114 | 1997 | 45.263 | 1996 | 45.413 | 1995 | 45.563 | 1994 | 45.817 | 1993 | 46.093 | 1992 | 46.37 | 1991 | 46.648 | 1990 | 46.925 | 1989 | 47.203 | 1988 | 47.481 | 1987 | 47.759 | 1986 | 48.037 | 1985 | 48.316 | 1984 | 48.594 | 1983 | 48.873 | 1982 | 49.151 | 1981 | 49.43 | 1980 | 49.708 | 1979 | 49.987 | 1978 | 50.266 | 1977 | 50.544 | 1976 | 50.823 | 1975 | 51.102 | 1974 | 51.38 | 1973 | 51.659 | 1972 | 51.937 | 1971 | 52.215 | 1970 | 52.97 | 1969 | 53.84 | 1968 | 54.707 | 1967 | 55.573 | 1966 | 56.435 | 1965 | 57.293 | 1964 | 58.145 | 1963 | 58.995 | 1962 | 59.519 | 1961 | 59.97 | 1960 | 60.419 |
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