Year | Value | 2022 | 75.937 | 2021 | 76.219 | 2020 | 76.48 | 2019 | 76.721 | 2018 | 76.941 | 2017 | 77.142 | 2016 | 77.323 | 2015 | 77.485 | 2014 | 77.628 | 2013 | 77.752 | 2012 | 77.858 | 2011 | 77.946 | 2010 | 78.015 | 2009 | 78.066 | 2008 | 78.099 | 2007 | 78.132 | 2006 | 78.166 | 2005 | 78.199 | 2004 | 78.232 | 2003 | 78.265 | 2002 | 78.298 | 2001 | 78.33 | 2000 | 78.363 | 1999 | 78.396 | 1998 | 78.429 | 1997 | 78.462 | 1996 | 78.494 | 1995 | 78.527 | 1994 | 78.56 | 1993 | 78.592 | 1992 | 78.765 | 1991 | 78.977 | 1990 | 79.189 | 1989 | 79.398 | 1988 | 79.606 | 1987 | 79.813 | 1986 | 80.017 | 1985 | 80.221 | 1984 | 80.422 | 1983 | 80.623 | 1982 | 80.821 | 1981 | 81.018 | 1980 | 81.213 | 1979 | 81.408 | 1978 | 81.6 | 1977 | 82.587 | 1976 | 83.53 | 1975 | 84.434 | 1974 | 85.296 | 1973 | 86.118 | 1972 | 86.9 | 1971 | 87.687 | 1970 | 88.432 | 1969 | 89.138 | 1968 | 89.804 | 1967 | 90.436 | 1966 | 91.032 | 1965 | 91.594 | 1964 | 92.123 | 1963 | 92.473 | 1962 | 92.761 | 1961 | 93.038 | 1960 | 93.305 |
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