Year | Value | 2022 | 47.339 | 2021 | 47.82 | 2020 | 48.294 | 2019 | 48.761 | 2018 | 49.221 | 2017 | 49.674 | 2016 | 50.119 | 2015 | 50.556 | 2014 | 50.986 | 2013 | 51.407 | 2012 | 51.828 | 2011 | 52.249 | 2010 | 52.67 | 2009 | 53.09 | 2008 | 53.509 | 2007 | 53.929 | 2006 | 54.348 | 2005 | 54.766 | 2004 | 55.183 | 2003 | 55.601 | 2002 | 56.017 | 2001 | 56.432 | 2000 | 56.845 | 1999 | 57.259 | 1998 | 57.658 | 1997 | 58.036 | 1996 | 58.413 | 1995 | 58.79 | 1994 | 59.165 | 1993 | 59.539 | 1992 | 59.912 | 1991 | 60.284 | 1990 | 60.655 | 1989 | 61.024 | 1988 | 61.392 | 1987 | 61.654 | 1986 | 61.873 | 1985 | 62.09 | 1984 | 62.307 | 1983 | 62.524 | 1982 | 62.74 | 1981 | 62.956 | 1980 | 63.171 | 1979 | 63.386 | 1978 | 63.6 | 1977 | 65.017 | 1976 | 66.406 | 1975 | 67.771 | 1974 | 68.679 | 1973 | 69.487 | 1972 | 70.281 | 1971 | 71.066 | 1970 | 71.837 | 1969 | 72.596 | 1968 | 73.341 | 1967 | 74.074 | 1966 | 74.794 | 1965 | 75.5 | 1964 | 76.993 | 1963 | 78.425 | 1962 | 79.79 | 1961 | 81.089 | 1960 | 82.321 |
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