Year | Value | 2021 | 80.547969408105 | 2020 | 94.362096384076 | 2019 | 88.728998768348 | 2018 | 92.300982569173 | 2017 | 91.527379379734 | 2016 | 91.218900444294 | 2015 | 88.716955145336 | 2014 | 83.466254785411 | 2013 | 82.263274386915 | 2012 | 81.593687455348 | 2011 | 75.318022181146 | 2010 | 81.397759042799 | 2009 | 81.032537679266 | 2008 | 80.727710943076 | 2007 | 78.426114500005 | 2006 | 77.826436267838 | 2005 | 80.525428697054 | 2004 | 83.527018117246 | 2003 | 83.965438158751 | 2002 | 86.116501624547 | 2001 | 79.804743633428 | 2000 | 77.44780127067 | 1999 | 84.089177910792 | 1998 | 99.281751322524 | 1997 | 90.428513784254 | 1996 | 88.288370670286 | 1995 | 88.483226720161 | 1994 | 92.791626407202 | 1993 | 96.854702603181 | 1992 | 112.36005373936 | 1991 | 110.6354784813 | 1990 | 79.049295774648 | 1989 | 88.986026020514 | 1988 | 82.15645427771 | 1987 | 85.032153444578 | 1986 | 86.102640062734 | 1985 | 88.07078872624 | 1984 | 97.357854954035 | 1983 | 96.268862147536 | 1982 | 87.795433323607 | 1981 | 88.879530638853 | 1980 | 91.132052499784 |
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