Year | Value | 2022 | 23.193 | 2021 | 23.655 | 2020 | 24.126 | 2019 | 24.609 | 2018 | 25.102 | 2017 | 25.606 | 2016 | 26.12 | 2015 | 26.642 | 2014 | 27.17 | 2013 | 27.705 | 2012 | 28.245 | 2011 | 28.8 | 2010 | 29.374 | 2009 | 29.955 | 2008 | 30.542 | 2007 | 31.136 | 2006 | 31.761 | 2005 | 32.442 | 2004 | 33.131 | 2003 | 33.828 | 2002 | 34.532 | 2001 | 35.242 | 2000 | 35.958 | 1999 | 36.682 | 1998 | 37.412 | 1997 | 38.147 | 1996 | 38.913 | 1995 | 39.764 | 1994 | 40.62 | 1993 | 41.481 | 1992 | 42.347 | 1991 | 43.135 | 1990 | 43.67 | 1989 | 44.206 | 1988 | 44.743 | 1987 | 45.283 | 1986 | 45.867 | 1985 | 46.605 | 1984 | 47.343 | 1983 | 48.084 | 1982 | 48.825 | 1981 | 49.566 | 1980 | 50.307 | 1979 | 51.049 | 1978 | 51.79 | 1977 | 52.53 | 1976 | 53.334 | 1975 | 54.253 | 1974 | 55.168 | 1973 | 56.08 | 1972 | 56.986 | 1971 | 57.89 | 1970 | 58.788 | 1969 | 59.679 | 1968 | 60.563 | 1967 | 61.443 | 1966 | 62.248 | 1965 | 62.932 | 1964 | 63.609 | 1963 | 64.282 | 1962 | 64.949 | 1961 | 65.611 | 1960 | 66.265 |
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