Year | Value | 2022 | 83.106 | 2021 | 83.249 | 2020 | 83.374 | 2019 | 83.483 | 2018 | 83.575 | 2017 | 83.65 | 2016 | 83.71 | 2015 | 83.753 | 2014 | 83.781 | 2013 | 83.792 | 2012 | 83.788 | 2011 | 83.784 | 2010 | 83.779 | 2009 | 83.775 | 2008 | 83.771 | 2007 | 83.766 | 2006 | 83.762 | 2005 | 83.758 | 2004 | 83.753 | 2003 | 83.749 | 2002 | 83.745 | 2001 | 83.74 | 2000 | 83.814 | 1999 | 83.897 | 1998 | 83.98 | 1997 | 84.063 | 1996 | 84.145 | 1995 | 84.227 | 1994 | 84.309 | 1993 | 84.39 | 1992 | 84.471 | 1991 | 84.551 | 1990 | 84.632 | 1989 | 84.711 | 1988 | 84.791 | 1987 | 85.007 | 1986 | 85.237 | 1985 | 85.464 | 1984 | 85.688 | 1983 | 85.91 | 1982 | 86.129 | 1981 | 86.344 | 1980 | 86.557 | 1979 | 86.767 | 1978 | 86.975 | 1977 | 87.352 | 1976 | 87.979 | 1975 | 88.581 | 1974 | 89.155 | 1973 | 89.704 | 1972 | 90.228 | 1971 | 90.729 | 1970 | 91.206 | 1969 | 91.661 | 1968 | 92.094 | 1967 | 92.507 | 1966 | 92.9 | 1965 | 93.191 | 1964 | 93.471 | 1963 | 93.741 | 1962 | 94 | 1961 | 94.104 | 1960 | 94.207 |
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