Year | Value | 2022 | 88.479888231117 | 2021 | 90.396544329902 | 2020 | 89.114904075445 | 2019 | 89.925075779709 | 2018 | 89.777640495109 | 2017 | 90.76864009042 | 2016 | 92.824797765751 | 2015 | 90.521862970928 | 2014 | 90.260888902687 | 2013 | 91.810882510179 | 2012 | 92.038367274282 | 2011 | 94.838722553797 | 2010 | 95.506166741538 | 2009 | 95.995988603455 | 2008 | 94.568658963081 | 2007 | 93.745377560574 | 2006 | 96.831899639243 | 2005 | 94.061172253438 | 2004 | 88.636325496316 | 2003 | 87.387772134237 | 2002 | 87.944177120998 | 2001 | 91.238922240623 | 2000 | 89.077375081756 | 1999 | 96.800291271144 | 1998 | 97.177828385206 | 1997 | 99.54304895435 | 1996 | 92.089681395376 | 1995 | 88.842854714202 | 1994 | 88.662424830883 | 1993 | 100.23275701293 | 1992 | 93.505709755707 | 1991 | 90.977038673712 | 1990 | 85.290398351198 | 1989 | 92.652951800403 | 1988 | 92.917423988098 | 1987 | 91.736816585705 | 1986 | 92.87425310903 | 1985 | 92.067149803559 | 1984 | 87.061824581042 | 1983 | 80.671696855776 | 1982 | 87.185193593608 | 1981 | 82.906312386796 | 1980 | 76.842993598721 | 1979 | 77.419608951318 | 1978 | 60.215054087178 | 1977 | 76.648168171281 | 1976 | 74.357434450776 | 1975 | 82.622829564202 | 1974 | 46.495181174527 | 1973 | 78.131568947976 | 1972 | 78.514545950062 | 1971 | 74.174642778698 | 1970 | 74.052985764652 | 1969 | 73.231554969441 | 1968 | 76.062616371055 | 1967 | 77.046138849663 | 1966 | 75.953469237949 | 1965 | 76.68975650517 | 1964 | 80.338744153669 | 1963 | 91.591277765948 | 1962 | 85.294881363205 | 1961 | 83.019578496405 | 1960 | 89.678703811884 |
|