Year | Value | 2022 | 50.466 | 2021 | 51.028 | 2020 | 51.585 | 2019 | 52.139 | 2018 | 52.688 | 2017 | 53.232 | 2016 | 53.771 | 2015 | 54.305 | 2014 | 54.834 | 2013 | 55.358 | 2012 | 55.875 | 2011 | 56.392 | 2010 | 56.907 | 2009 | 57.42 | 2008 | 57.931 | 2007 | 58.442 | 2006 | 58.951 | 2005 | 59.457 | 2004 | 59.961 | 2003 | 60.464 | 2002 | 60.964 | 2001 | 61.35 | 2000 | 61.667 | 1999 | 61.985 | 1998 | 62.301 | 1997 | 62.615 | 1996 | 62.929 | 1995 | 63.242 | 1994 | 63.553 | 1993 | 63.864 | 1992 | 64.173 | 1991 | 64.753 | 1990 | 65.515 | 1989 | 66.27 | 1988 | 67.015 | 1987 | 67.754 | 1986 | 68.483 | 1985 | 69.204 | 1984 | 69.914 | 1983 | 70.616 | 1982 | 71.308 | 1981 | 71.99 | 1980 | 72.661 | 1979 | 73.324 | 1978 | 74.448 | 1977 | 75.707 | 1976 | 76.921 | 1975 | 78.096 | 1974 | 79.225 | 1973 | 80.311 | 1972 | 81.352 | 1971 | 82.353 | 1970 | 83.309 | 1969 | 84.224 | 1968 | 85.097 | 1967 | 85.931 | 1966 | 86.725 | 1965 | 87.481 | 1964 | 88.199 | 1963 | 88.882 | 1962 | 89.53 | 1961 | 90.144 | 1960 | 90.725 |
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