Year | Value | 2019 | 89.769350649843 | 2018 | 89.538690571616 | 2017 | 91.677207424704 | 2016 | 91.540197901731 | 2015 | 94.922264994936 | 2014 | 99.758026283106 | 2013 | 100.84791801667 | 2012 | 101.73948312414 | 2011 | 101.64826042031 | 2010 | 98.043253662231 | 2009 | 96.869758015689 | 2008 | 105.34024967818 | 2007 | 95.215845859228 | 2006 | 92.060162991371 | 2005 | 92.99890328956 | 2004 | 87.762843666136 | 2003 | 88.67624102404 | 2002 | 88.985134575129 | 2001 | 87.819059261379 | 2000 | 88.469576764 | 1999 | 84.895181882634 | 1998 | 85.008344438494 | 1997 | 82.111574013362 | 1996 | 81.67041951774 | 1995 | 79.840621593092 | 1994 | 76.055830557142 | 1993 | 69.411738701169 | 1992 | 75.72125476714 | 1991 | 77.446768932559 | 1990 | 77.929009929414 | 1989 | 82.173763063287 | 1988 | 80.532774637209 | 1987 | 79.017053588417 | 1986 | 80.09828058027 | 1985 | 85.528894733598 | 1984 | 82.908588618018 | 1983 | 85.072643638497 | 1982 | 89.730870797127 | 1981 | 88.320863404247 | 1980 | 84.069051559783 | 1979 | 81.606187349581 | 1978 | 81.733288335921 | 1977 | 86.389330345237 | 1976 | 90.631960785935 | 1975 | 84.579294899988 | 1974 | 85.906817339756 | 1973 | 78.080120937264 | 1972 | 80.953366687513 | 1971 | 75.031191515908 | 1970 | 72.646512271187 | 1969 | 71.542258486955 | 1968 | 70.360938883968 | 1967 | 71.481837863844 | 1966 | 70.398263977534 | 1965 | 77.073732718894 | 1964 | 78.792343033687 | 1963 | 74.857317042193 | 1962 | 75.283698156682 | 1961 | 74.050161233874 | 1960 | 76.296667607257 |
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