Year | Value | 2022 | 27.675 | 2021 | 28.075 | 2020 | 28.482 | 2019 | 28.896 | 2018 | 29.317 | 2017 | 29.744 | 2016 | 30.179 | 2015 | 30.621 | 2014 | 31.069 | 2013 | 31.521 | 2012 | 31.976 | 2011 | 32.435 | 2010 | 32.898 | 2009 | 33.376 | 2008 | 34.031 | 2007 | 34.694 | 2006 | 35.362 | 2005 | 36.035 | 2004 | 36.659 | 2003 | 37.013 | 2002 | 37.368 | 2001 | 37.724 | 2000 | 38.081 | 1999 | 38.441 | 1998 | 38.801 | 1997 | 39.162 | 1996 | 39.525 | 1995 | 39.712 | 1994 | 39.854 | 1993 | 39.996 | 1992 | 40.138 | 1991 | 40.281 | 1990 | 40.423 | 1989 | 40.566 | 1988 | 40.714 | 1987 | 40.865 | 1986 | 41.015 | 1985 | 41.166 | 1984 | 41.317 | 1983 | 41.468 | 1982 | 41.803 | 1981 | 42.188 | 1980 | 42.574 | 1979 | 42.961 | 1978 | 43.349 | 1977 | 43.738 | 1976 | 44.127 | 1975 | 44.835 | 1974 | 45.618 | 1973 | 46.403 | 1972 | 47.189 | 1971 | 47.978 | 1970 | 48.768 | 1969 | 49.558 | 1968 | 50.844 | 1967 | 52.354 | 1966 | 53.858 | 1965 | 55.354 | 1964 | 56.839 | 1963 | 58.316 | 1962 | 59.776 | 1961 | 61.219 | 1960 | 62.64 |
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