Year | Value | 2021 | 84.445609756098 | 2020 | 84.56 | 2019 | 84.356341463415 | 2018 | 84.210975609756 | 2017 | 84.099756097561 | 2016 | 83.984878048781 | 2015 | 83.793902439024 | 2014 | 83.587804878049 | 2013 | 83.331951219512 | 2012 | 83.096097560976 | 2011 | 82.591219512195 | 2010 | 82.842682926829 | 2009 | 82.931463414634 | 2008 | 82.58756097561 | 2007 | 82.507073170732 | 2006 | 82.321951219512 | 2005 | 81.955121951219 | 2004 | 82.030243902439 | 2003 | 81.76 | 2002 | 81.690731707317 | 2001 | 81.416341463415 | 2000 | 81.076097560976 | 1999 | 80.460975609756 | 1998 | 80.501463414634 | 1997 | 80.424146341463 | 1996 | 80.219756097561 | 1995 | 79.536097560976 | 1994 | 79.696829268293 | 1993 | 79.303658536585 | 1992 | 79.080243902439 | 1991 | 79.036829268293 | 1990 | 78.837073170732 | 1989 | 78.768536585366 | 1988 | 78.349756097561 | 1987 | 78.429512195122 | 1986 | 78.010487804878 | 1985 | 77.560487804878 | 1984 | 77.291219512195 | 1983 | 76.921951219512 | 1982 | 76.873658536585 | 1981 | 76.39487804878 | 1980 | 75.989024390244 | 1979 | 76.108780487805 | 1978 | 75.584634146342 | 1977 | 75.255853658537 | 1976 | 74.686585365854 | 1975 | 74.247073170732 | 1974 | 73.672195121951 | 1973 | 73.295121951219 | 1972 | 73.153658536585 | 1971 | 72.809024390244 | 1970 | 71.919756097561 | 1969 | 71.858048780488 | 1968 | 71.610975609756 | 1967 | 71.466097560976 | 1966 | 70.915853658537 | 1965 | 70.266829268293 | 1964 | 70.206585365854 | 1963 | 69.71243902439 | 1962 | 68.63487804878 | 1961 | 68.351951219512 | 1960 | 67.695609756098 |
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