Year | Value | 2014 | 97.865535217555 | 2013 | 96.47033485265 | 2012 | 96.848938269367 | 2011 | 96.76061872915 | 2010 | 96.755375072157 | 2009 | 97.191527201656 | 2008 | 96.581910157339 | 2007 | 94.683926647134 | 2006 | 95.169963720965 | 2005 | 94.88657965147 | 2004 | 95.110850345367 | 2003 | 94.802014872845 | 2002 | 96.075678666417 | 2001 | 96.803656353281 | 2000 | 96.484469092861 | 1999 | 97.060569779744 | 1998 | 96.213470164535 | 1997 | 96.141148965054 | 1996 | 95.888813256037 | 1995 | 95.885518440098 | 1994 | 95.168746888118 | 1993 | 95.135549968294 | 1992 | 93.180759991202 | 1991 | 93.754579602801 | 1990 | 92.689371742084 | 1989 | 92.347375060616 | 1988 | 92.089987905829 | 1987 | 94.099205184357 | 1986 | 94.092134817546 | 1985 | 93.362593402271 | 1984 | 92.168821503138 | 1983 | 92.134966161313 | 1982 | 91.045600842451 | 1981 | 92.485959822186 | 1980 | 92.819948688218 | 1979 | 92.337922797266 | 1978 | 91.834184507565 | 1977 | 90.217278681514 | 1976 | 92.339251911082 | 1975 | 91.798353590017 | 1974 | 92.736679160864 | 1973 | 94.015461791413 | 1972 | 91.155589864043 | 1971 | 90.884222713968 |
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