Year | Value | 2022 | 42.942 | 2021 | 43.665 | 2020 | 44.406 | 2019 | 45.165 | 2018 | 45.943 | 2017 | 46.738 | 2016 | 47.55 | 2015 | 48.381 | 2014 | 49.227 | 2013 | 50.073 | 2012 | 50.918 | 2011 | 51.765 | 2010 | 52.61 | 2009 | 53.453 | 2008 | 54.294 | 2007 | 55.134 | 2006 | 55.97 | 2005 | 56.449 | 2004 | 56.468 | 2003 | 56.488 | 2002 | 56.508 | 2001 | 56.527 | 2000 | 57.042 | 1999 | 58.46 | 1998 | 59.862 | 1997 | 61.248 | 1996 | 62.614 | 1995 | 63.591 | 1994 | 63.877 | 1993 | 64.161 | 1992 | 64.445 | 1991 | 64.728 | 1990 | 65.013 | 1989 | 65.305 | 1988 | 65.595 | 1987 | 65.884 | 1986 | 66.172 | 1985 | 66.459 | 1984 | 66.716 | 1983 | 66.968 | 1982 | 67.218 | 1981 | 67.468 | 1980 | 67.716 | 1979 | 67.964 | 1978 | 68.404 | 1977 | 69.075 | 1976 | 69.738 | 1975 | 70.394 | 1974 | 71.04 | 1973 | 72.003 | 1972 | 73.346 | 1971 | 74.652 | 1970 | 75.912 | 1969 | 77.129 | 1968 | 78.137 | 1967 | 78.903 | 1966 | 79.649 | 1965 | 80.375 | 1964 | 81.08 | 1963 | 81.767 | 1962 | 82.434 | 1961 | 83.082 | 1960 | 83.71 |
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