Year | Value | 2022 | 45.511 | 2021 | 45.671 | 2020 | 45.806 | 2019 | 45.916 | 2018 | 46.002 | 2017 | 46.064 | 2016 | 46.1 | 2015 | 46.113 | 2014 | 46.1 | 2013 | 46.063 | 2012 | 46.026 | 2011 | 46.04 | 2010 | 46.171 | 2009 | 46.302 | 2008 | 46.433 | 2007 | 46.564 | 2006 | 46.695 | 2005 | 46.826 | 2004 | 46.957 | 2003 | 47.088 | 2002 | 47.22 | 2001 | 47.148 | 2000 | 46.996 | 1999 | 46.842 | 1998 | 46.689 | 1997 | 46.537 | 1996 | 46.384 | 1995 | 46.231 | 1994 | 46.078 | 1993 | 45.926 | 1992 | 45.773 | 1991 | 46.07 | 1990 | 46.783 | 1989 | 47.496 | 1988 | 48.21 | 1987 | 48.927 | 1986 | 49.643 | 1985 | 50.359 | 1984 | 51.074 | 1983 | 51.79 | 1982 | 52.505 | 1981 | 53.219 | 1980 | 53.93 | 1979 | 54.642 | 1978 | 55.351 | 1977 | 56.058 | 1976 | 56.661 | 1975 | 57.169 | 1974 | 57.675 | 1973 | 58.179 | 1972 | 58.681 | 1971 | 59.182 | 1970 | 59.681 | 1969 | 60.178 | 1968 | 60.672 | 1967 | 61.165 | 1966 | 61.655 | 1965 | 62.303 | 1964 | 63.011 | 1963 | 63.716 | 1962 | 64.414 | 1961 | 65.106 | 1960 | 65.791 |
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