Year | Value | 2022 | 14.319 | 2021 | 14.404 | 2020 | 14.483 | 2019 | 14.554 | 2018 | 14.618 | 2017 | 14.675 | 2016 | 14.725 | 2015 | 14.775 | 2014 | 14.825 | 2013 | 14.875 | 2012 | 15.159 | 2011 | 15.687 | 2010 | 16.23 | 2009 | 16.571 | 2008 | 16.701 | 2007 | 16.832 | 2006 | 16.963 | 2005 | 17.095 | 2004 | 17.228 | 2003 | 17.362 | 2002 | 17.497 | 2001 | 17.632 | 2000 | 17.817 | 1999 | 18.054 | 1998 | 18.293 | 1997 | 18.534 | 1996 | 18.777 | 1995 | 19.037 | 1994 | 19.312 | 1993 | 19.591 | 1992 | 19.872 | 1991 | 20.157 | 1990 | 20.633 | 1989 | 21.309 | 1988 | 22 | 1987 | 22.709 | 1986 | 23.433 | 1985 | 24.192 | 1984 | 24.985 | 1983 | 25.798 | 1982 | 26.627 | 1981 | 27.472 | 1980 | 28.273 | 1979 | 29.03 | 1978 | 29.798 | 1977 | 30.577 | 1976 | 31.366 | 1975 | 32.169 | 1974 | 32.981 | 1973 | 33.803 | 1972 | 34.634 | 1971 | 35.477 | 1970 | 36.296 | 1969 | 37.092 | 1968 | 37.894 | 1967 | 38.705 | 1966 | 39.52 | 1965 | 40.342 | 1964 | 41.168 | 1963 | 42.002 | 1962 | 42.838 | 1961 | 43.679 | 1960 | 44.71 |
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