Year | Value | 2014 | 96.812297293481 | 2013 | 96.539691277911 | 2012 | 96.532476211611 | 2011 | 96.105895459779 | 2010 | 96.164763128612 | 2009 | 96.069887029717 | 2008 | 96.102800222889 | 2007 | 96.156134436459 | 2006 | 95.765570313892 | 2005 | 96.167541418859 | 2004 | 95.270910403502 | 2003 | 94.456901530856 | 2002 | 94.808985783991 | 2001 | 94.171773028033 | 2000 | 94.123391977403 | 1999 | 93.85253035233 | 1998 | 93.681261937369 | 1997 | 93.593398599165 | 1996 | 93.772781477496 | 1995 | 93.503685677329 | 1994 | 93.260770222457 | 1993 | 94.997576911485 | 1992 | 95.50318320884 | 1991 | 95.315468021754 | 1990 | 95.053667407767 | 1989 | 98.183911054912 | 1988 | 99.322114428223 | 1987 | 99.188532449802 | 1986 | 99.405833748842 | 1985 | 99.955299339691 | 1984 | 99.954568946671 | 1983 | 99.950030131404 | 1982 | 99.956826752389 | 1981 | 99.95089302433 | 1980 | 99.95447692808 | 1979 | 99.944449387621 | 1978 | 99.942960897349 | 1977 | 99.930036677742 | 1976 | 99.879173297505 | 1975 | 99.876417350951 | 1974 | 99.856599797915 | 1973 | 99.848543512424 | 1972 | 99.827474380594 | 1971 | 99.810903418566 |
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