Year | Value | 2022 | 5.125 | 2021 | 5.19 | 2020 | 5.256 | 2019 | 5.322 | 2018 | 5.388 | 2017 | 5.454 | 2016 | 5.52 | 2015 | 5.586 | 2014 | 5.653 | 2013 | 5.721 | 2012 | 5.789 | 2011 | 5.859 | 2010 | 5.928 | 2009 | 5.999 | 2008 | 6.071 | 2007 | 6.143 | 2006 | 6.216 | 2005 | 6.355 | 2004 | 6.593 | 2003 | 6.84 | 2002 | 7.095 | 2001 | 7.359 | 2000 | 7.632 | 1999 | 7.915 | 1998 | 8.207 | 1997 | 8.508 | 1996 | 8.819 | 1995 | 9.054 | 1994 | 9.165 | 1993 | 9.277 | 1992 | 9.389 | 1991 | 9.503 | 1990 | 9.619 | 1989 | 9.735 | 1988 | 9.853 | 1987 | 9.972 | 1986 | 10.093 | 1985 | 10.172 | 1984 | 10.18 | 1983 | 10.189 | 1982 | 10.197 | 1981 | 10.206 | 1980 | 10.215 | 1979 | 10.223 | 1978 | 10.232 | 1977 | 10.24 | 1976 | 10.249 | 1975 | 10.258 | 1974 | 10.266 | 1973 | 10.275 | 1972 | 10.284 | 1971 | 10.292 | 1970 | 10.301 | 1969 | 10.31 | 1968 | 10.318 | 1967 | 10.298 | 1966 | 10.236 | 1965 | 10.175 | 1964 | 10.114 | 1963 | 10.052 | 1962 | 9.992 | 1961 | 9.931 | 1960 | 9.871 |
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