Year | Value | 2022 | 24.874 | 2021 | 25.066 | 2020 | 25.246 | 2019 | 25.413 | 2018 | 25.567 | 2017 | 25.708 | 2016 | 25.836 | 2015 | 25.95 | 2014 | 26.05 | 2013 | 26.137 | 2012 | 26.209 | 2011 | 26.268 | 2010 | 26.313 | 2009 | 26.358 | 2008 | 26.402 | 2007 | 26.447 | 2006 | 26.492 | 2005 | 26.537 | 2004 | 26.582 | 2003 | 26.627 | 2002 | 26.659 | 2001 | 26.654 | 2000 | 26.65 | 1999 | 26.646 | 1998 | 26.641 | 1997 | 26.637 | 1996 | 26.633 | 1995 | 26.628 | 1994 | 26.624 | 1993 | 26.619 | 1992 | 26.615 | 1991 | 26.611 | 1990 | 26.606 | 1989 | 26.602 | 1988 | 26.819 | 1987 | 27.235 | 1986 | 27.654 | 1985 | 28.077 | 1984 | 28.503 | 1983 | 28.934 | 1982 | 29.369 | 1981 | 29.807 | 1980 | 30.249 | 1979 | 30.695 | 1978 | 31.302 | 1977 | 32.05 | 1976 | 32.806 | 1975 | 33.573 | 1974 | 34.348 | 1973 | 35.131 | 1972 | 35.922 | 1971 | 36.722 | 1970 | 37.529 | 1969 | 38.362 | 1968 | 39.217 | 1967 | 40.082 | 1966 | 40.952 | 1965 | 41.827 | 1964 | 42.706 | 1963 | 43.592 | 1962 | 44.482 | 1961 | 45.374 | 1960 | 46.269 |
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