Year | Value | 2022 | 21.786 | 2021 | 22.304 | 2020 | 22.84 | 2019 | 23.393 | 2018 | 23.964 | 2017 | 24.553 | 2016 | 25.16 | 2015 | 25.787 | 2014 | 26.423 | 2013 | 27.07 | 2012 | 27.725 | 2011 | 28.391 | 2010 | 29.088 | 2009 | 29.925 | 2008 | 30.775 | 2007 | 31.64 | 2006 | 32.517 | 2005 | 33.406 | 2004 | 34.306 | 2003 | 35.22 | 2002 | 36.144 | 2001 | 37.078 | 2000 | 38.023 | 1999 | 39.258 | 1998 | 40.504 | 1997 | 41.763 | 1996 | 43.031 | 1995 | 44.312 | 1994 | 45.598 | 1993 | 46.891 | 1992 | 48.186 | 1991 | 49.424 | 1990 | 50.206 | 1989 | 50.988 | 1988 | 51.768 | 1987 | 52.55 | 1986 | 53.329 | 1985 | 54.107 | 1984 | 54.881 | 1983 | 55.655 | 1982 | 56.426 | 1981 | 57.193 | 1980 | 57.956 | 1979 | 58.842 | 1978 | 59.729 | 1977 | 60.609 | 1976 | 61.481 | 1975 | 62.348 | 1974 | 63.206 | 1973 | 64.056 | 1972 | 64.896 | 1971 | 65.729 | 1970 | 66.546 | 1969 | 67.271 | 1968 | 67.987 | 1967 | 68.696 | 1966 | 69.396 | 1965 | 70.087 | 1964 | 70.768 | 1963 | 71.442 | 1962 | 72.105 | 1961 | 72.759 | 1960 | 73.402 |
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