Year | Value | 2022 | 35.43 | 2021 | 35.639 | 2020 | 35.834 | 2019 | 36.014 | 2018 | 36.179 | 2017 | 36.33 | 2016 | 36.466 | 2015 | 36.602 | 2014 | 36.739 | 2013 | 36.875 | 2012 | 37.012 | 2011 | 37.149 | 2010 | 37.31 | 2009 | 37.505 | 2008 | 37.7 | 2007 | 37.896 | 2006 | 38.093 | 2005 | 38.289 | 2004 | 38.486 | 2003 | 38.684 | 2002 | 38.882 | 2001 | 39.201 | 2000 | 39.701 | 1999 | 40.204 | 1998 | 40.709 | 1997 | 41.215 | 1996 | 41.723 | 1995 | 42.234 | 1994 | 42.746 | 1993 | 43.26 | 1992 | 43.774 | 1991 | 44.291 | 1990 | 44.91 | 1989 | 45.682 | 1988 | 46.454 | 1987 | 47.231 | 1986 | 48.007 | 1985 | 48.785 | 1984 | 49.562 | 1983 | 50.342 | 1982 | 51.182 | 1981 | 52.112 | 1980 | 53.039 | 1979 | 53.966 | 1978 | 54.889 | 1977 | 55.809 | 1976 | 56.724 | 1975 | 57.637 | 1974 | 58.543 | 1973 | 59.108 | 1972 | 59.648 | 1971 | 60.187 | 1970 | 60.722 | 1969 | 61.256 | 1968 | 61.785 | 1967 | 62.314 | 1966 | 62.838 | 1965 | 63.36 | 1964 | 63.878 | 1963 | 64.394 | 1962 | 64.94 | 1961 | 65.534 | 1960 | 66.122 |
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