Year | Value | 2022 | 88.576756368009 | 2021 | 90.069283218498 | 2020 | 93.280626482779 | 2019 | 89.227635591792 | 2018 | 89.014164451538 | 2017 | 89.48810296541 | 2016 | 88.607393979728 | 2015 | 88.946394126269 | 2014 | 89.662850391052 | 2013 | 90.51814170858 | 2012 | 92.478195582693 | 2011 | 91.823789434818 | 2010 | 89.614822649762 | 2009 | 91.441576149413 | 2008 | 88.095285106156 | 2007 | 85.352736580347 | 2006 | 84.350319648851 | 2005 | 86.177124866931 | 2004 | 83.175042530341 | 2003 | 83.725920580276 | 2002 | 85.37358298411 | 2001 | 84.871145045964 | 2000 | 85.153229432899 | 1999 | 84.715732554091 | 1998 | 84.499613507801 | 1997 | 84.38881710779 | 1996 | 85.568449663097 | 1995 | 85.785720885655 | 1994 | 84.472442782584 | 1993 | 85.151491867517 | 1992 | 84.193478468912 | 1991 | 83.031508176892 | 1990 | 84.058685516939 | 1989 | 82.699184028736 | 1988 | 80.836930196547 | 1987 | 82.5154368064 | 1986 | 77.914493826341 | 1985 | 78.189084796137 | 1984 | 78.48791415109 | 1983 | 80.46471377666 | 1982 | 78.600363975165 | 1981 | 78.720459817974 | 1980 | 76.078035376026 | 1979 | 74.558979970214 | 1978 | 74.865893542942 | 1977 | 74.969768460545 | 1976 | 71.398743076982 | 1975 | 73.127667144137 | 1974 | 71.625992025694 | 1973 | 65.242365197618 | 1972 | 69.388360785369 | 1971 | 72.494186472119 | 1970 | 74.162333911034 | 1969 | 74.534503372642 | 1968 | 78.061774611065 | 1967 | 78.490290632033 | 1966 | 76.955171993476 | 1965 | 77.668006230783 | 1964 | 79.876118284355 | 1963 | 80.411682096509 | 1962 | 83.754529782832 | 1961 | 82.677204651664 | 1960 | 87.380477343915 |
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