Year | Value | 2022 | 85.681 | 2021 | 85.596 | 2020 | 85.517 | 2019 | 85.446 | 2018 | 85.382 | 2017 | 85.325 | 2016 | 85.275 | 2015 | 85.225 | 2014 | 85.175 | 2013 | 85.125 | 2012 | 84.841 | 2011 | 84.313 | 2010 | 83.77 | 2009 | 83.429 | 2008 | 83.299 | 2007 | 83.168 | 2006 | 83.037 | 2005 | 82.905 | 2004 | 82.772 | 2003 | 82.638 | 2002 | 82.503 | 2001 | 82.368 | 2000 | 82.183 | 1999 | 81.946 | 1998 | 81.707 | 1997 | 81.466 | 1996 | 81.223 | 1995 | 80.963 | 1994 | 80.688 | 1993 | 80.409 | 1992 | 80.128 | 1991 | 79.843 | 1990 | 79.367 | 1989 | 78.691 | 1988 | 78 | 1987 | 77.291 | 1986 | 76.567 | 1985 | 75.808 | 1984 | 75.015 | 1983 | 74.202 | 1982 | 73.373 | 1981 | 72.528 | 1980 | 71.727 | 1979 | 70.97 | 1978 | 70.202 | 1977 | 69.423 | 1976 | 68.634 | 1975 | 67.831 | 1974 | 67.019 | 1973 | 66.197 | 1972 | 65.366 | 1971 | 64.523 | 1970 | 63.704 | 1969 | 62.908 | 1968 | 62.106 | 1967 | 61.295 | 1966 | 60.48 | 1965 | 59.658 | 1964 | 58.832 | 1963 | 57.998 | 1962 | 57.162 | 1961 | 56.321 | 1960 | 55.29 |
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