Year | Value | 2021 | 82.748780487805 | 2020 | 82.143902439024 | 2019 | 82.639024390244 | 2018 | 82.295121951219 | 2017 | 82.095121951219 | 2016 | 82.685365853658 | 2015 | 82.292682926829 | 2014 | 82.229268292683 | 2013 | 81.8 | 2012 | 81.392682926829 | 2011 | 80.987804878049 | 2010 | 80.631707317073 | 2009 | 80.636585365854 | 2008 | 80.539024390244 | 2007 | 79.382926829268 | 2006 | 79.287804878049 | 2005 | 79.431707317073 | 2004 | 79.121951219512 | 2003 | 77.726829268293 | 2002 | 77.965853658537 | 2001 | 77.824390243902 | 2000 | 77.873170731707 | 1999 | 77.770731707317 | 1998 | 77.017073170732 | 1997 | 76.880487804878 | 1996 | 76.519512195122 | 1995 | 76.512195121951 | 1994 | 76.370731707317 | 1993 | 75.712195121951 | 1992 | 75.770731707317 | 1991 | 75.463414634146 | 1990 | 75.438317073171 | 1989 | 74.566268292683 | 1988 | 74.788219512195 | 1987 | 74.076097560976 | 1986 | 73.995512195122 | 1985 | 73.534195121951 | 1984 | 73.053219512195 | 1983 | 72.78112195122 | 1982 | 72.650341463415 | 1981 | 72.369756097561 | 1980 | 72.206804878049 | 1979 | 72.330780487805 | 1978 | 71.495804878049 | 1977 | 71.458658536585 | 1976 | 69.975146341463 | 1975 | 70.298609756098 | 1974 | 70.157170731707 | 1973 | 70.240365853659 | 1972 | 70.321585365854 | 1971 | 69.195243902439 | 1970 | 69.593219512195 | 1969 | 69.480707317073 | 1968 | 69.66243902439 | 1967 | 69.234024390244 | 1966 | 69.175634146341 | 1965 | 69.025414634146 | 1964 | 69.391682926829 | 1963 | 68.721926829268 | 1962 | 68.105170731707 | 1961 | 69.266829268293 | 1960 | 68.592536585366 |
|