Year | Value | 2022 | 35.404 | 2021 | 35.935 | 2020 | 36.468 | 2019 | 37.006 | 2018 | 37.547 | 2017 | 38.092 | 2016 | 38.64 | 2015 | 39.191 | 2014 | 39.744 | 2013 | 40.3 | 2012 | 40.858 | 2011 | 41.419 | 2010 | 41.982 | 2009 | 42.548 | 2008 | 43.114 | 2007 | 43.683 | 2006 | 44.254 | 2005 | 44.826 | 2004 | 45.356 | 2003 | 45.683 | 2002 | 46.01 | 2001 | 46.338 | 2000 | 46.665 | 1999 | 46.993 | 1998 | 47.322 | 1997 | 47.65 | 1996 | 47.978 | 1995 | 48.308 | 1994 | 48.705 | 1993 | 49.431 | 1992 | 50.156 | 1991 | 50.883 | 1990 | 51.609 | 1989 | 52.334 | 1988 | 53.057 | 1987 | 53.781 | 1986 | 54.502 | 1985 | 55.221 | 1984 | 55.937 | 1983 | 56.653 | 1982 | 57.366 | 1981 | 58.08 | 1980 | 58.79 | 1979 | 59.498 | 1978 | 60.202 | 1977 | 60.901 | 1976 | 61.595 | 1975 | 62.286 | 1974 | 62.971 | 1973 | 63.651 | 1972 | 64.325 | 1971 | 64.988 | 1970 | 65.523 | 1969 | 66.054 | 1968 | 66.581 | 1967 | 67.104 | 1966 | 67.623 | 1965 | 68.138 | 1964 | 68.647 | 1963 | 69.154 | 1962 | 69.655 | 1961 | 70.151 | 1960 | 70.643 |
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