Year | Value | 2022 | 68.229 | 2021 | 68.552 | 2020 | 68.859 | 2019 | 69.148 | 2018 | 69.421 | 2017 | 69.678 | 2016 | 69.918 | 2015 | 70.142 | 2014 | 70.35 | 2013 | 70.543 | 2012 | 70.734 | 2011 | 70.925 | 2010 | 71.115 | 2009 | 71.305 | 2008 | 71.493 | 2007 | 71.681 | 2006 | 71.868 | 2005 | 72.054 | 2004 | 72.24 | 2003 | 72.425 | 2002 | 72.609 | 2001 | 72.792 | 2000 | 72.975 | 1999 | 73.157 | 1998 | 73.337 | 1997 | 73.518 | 1996 | 73.697 | 1995 | 73.876 | 1994 | 74.054 | 1993 | 74.231 | 1992 | 74.407 | 1991 | 74.582 | 1990 | 74.757 | 1989 | 74.931 | 1988 | 75.104 | 1987 | 75.276 | 1986 | 75.448 | 1985 | 75.619 | 1984 | 75.788 | 1983 | 75.958 | 1982 | 76.007 | 1981 | 76.018 | 1980 | 76.027 | 1979 | 76.038 | 1978 | 76.048 | 1977 | 76.058 | 1976 | 76.067 | 1975 | 76.078 | 1974 | 76.087 | 1973 | 76.097 | 1972 | 76.394 | 1971 | 76.785 | 1970 | 77.17 | 1969 | 77.551 | 1968 | 77.927 | 1967 | 78.299 | 1966 | 78.666 | 1965 | 79.029 | 1964 | 79.387 | 1963 | 79.741 | 1962 | 80.09 | 1961 | 80.434 | 1960 | 80.774 |
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