Year | Value | 2022 | 72.552 | 2021 | 72.245 | 2020 | 71.942 | 2019 | 71.644 | 2018 | 71.351 | 2017 | 71.062 | 2016 | 70.779 | 2015 | 70.5 | 2014 | 70.227 | 2013 | 69.953 | 2012 | 69.678 | 2011 | 69.358 | 2010 | 68.911 | 2009 | 68.46 | 2008 | 67.943 | 2007 | 67.421 | 2006 | 66.895 | 2005 | 66.365 | 2004 | 65.896 | 2003 | 65.489 | 2002 | 65.081 | 2001 | 64.67 | 2000 | 64.575 | 1999 | 64.702 | 1998 | 64.829 | 1997 | 64.956 | 1996 | 65.083 | 1995 | 65.209 | 1994 | 65.335 | 1993 | 65.461 | 1992 | 65.587 | 1991 | 65.713 | 1990 | 65.838 | 1989 | 65.81 | 1988 | 65.632 | 1987 | 65.453 | 1986 | 65.274 | 1985 | 65.095 | 1984 | 64.915 | 1983 | 64.734 | 1982 | 64.553 | 1981 | 64.372 | 1980 | 64.191 | 1979 | 63.893 | 1978 | 63.48 | 1977 | 63.066 | 1976 | 62.65 | 1975 | 62.231 | 1974 | 61.81 | 1973 | 61.388 | 1972 | 60.965 | 1971 | 60.539 | 1970 | 60.112 | 1969 | 59.691 | 1968 | 59.276 | 1967 | 58.859 | 1966 | 58.441 | 1965 | 58.022 | 1964 | 57.603 | 1963 | 57.181 | 1962 | 56.758 | 1961 | 56.335 | 1960 | 55.911 |
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