Year | Value | 2022 | 88.650448746815 | 2021 | 87.643010753046 | 2020 | 88.917024340485 | 2019 | 89.593459563827 | 2018 | 89.45159725478 | 2017 | 90.248040996789 | 2016 | 89.017090190443 | 2015 | 88.243437947439 | 2014 | 87.810541095816 | 2013 | 88.339588524288 | 2012 | 87.472895464016 | 2011 | 88.69639837848 | 2010 | 85.778693195242 | 2009 | 86.028937228183 | 2008 | 91.001539231061 | 2007 | 89.484272426278 | 2006 | 90.578778877587 | 2005 | 92.779600558018 | 2004 | 93.384753858697 | 2003 | 95.250498770965 | 2002 | 95.692470249852 | 2001 | 95.543220537511 | 2000 | 93.345063821857 | 1999 | 94.333326243462 | 1998 | 93.943969980543 | 1997 | 92.715688298133 | 1996 | 91.250119913139 | 1995 | 84.104657200545 | 1994 | 77.571313560717 | 1993 | 77.605931902802 | 1992 | 82.986523466319 | 1991 | 80.285721518974 | 1990 | 81.03210428195 | 1989 | 86.941687435924 | 1988 | 79.947786602149 | 1987 | 80.822045231702 | 1986 | 78.241838512109 | 1985 | 75.702637394903 | 1984 | 81.606676632012 | 1983 | 79.565937365722 | 1982 | 81.93606063108 | 1981 | 80.324432404541 | 1980 | 81.828971180524 | 1979 | 83.700969873831 | 1978 | 80.010537973294 | 1977 | 72.853379213936 | 1976 | 79.065771188773 | 1975 | 86.546339934821 | 1974 | 81.465070236636 | 1973 | 75.46396447683 | 1972 | 79.80334839224 | 1971 | 82.633742167081 | 1970 | 76.441509796389 | 1969 | 79.187856388596 | 1968 | 79.847709591989 | 1967 | 80.736051794639 | 1966 | 79.850892059282 | 1965 | 84.90461136493 | 1964 | 82.758631516877 | 1963 | 83.990338895623 | 1962 | 83.534389169446 | 1961 | 83.222110669697 | 1960 | 82.857099837463 |
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