Year | Value | 2021 | 56.845445062587 | 2020 | 56.715055632823 | 2019 | 60.0921418637 | 2018 | 58.301460361613 | 2017 | 58.144993045897 | 2016 | 58.766515994437 | 2015 | 60.231223922114 | 2014 | 60.109527121001 | 2013 | 60.448637134287 | 2012 | 59.703504043127 | 2011 | 60.746404831212 | 2010 | 61.534449032819 | 2009 | 59.206294010258 | 2008 | 59.30404523706 | 2007 | 59.289225281656 | 2006 | 61.044438646839 | 2005 | 61.657535437864 | 2004 | 61.434782608696 | 2003 | 64.361817786475 | 2002 | 64.46252229521 | 2001 | 64.420356101171 | 2000 | 64.677201689086 | 1999 | 64.377177700348 | 1998 | 64.231891632911 | 1997 | 64.47087526685 | 1996 | 64.403973509934 | 1995 | 64.477755022005 | 1994 | 64.47649339898 | 1993 | 64.468752723786 | 1992 | 64.455678549638 | 1991 | 64.490543014033 | 1990 | 64.395029431001 | 1989 | 64.347067800305 | 1988 | 65.594338803508 | 1987 | 65.524876269862 | 1986 | 65.286098810454 | 1985 | 65.207953460103 | 1984 | 65.086394026222 | 1983 | 65.038638534341 | 1982 | 64.960493183989 | 1981 | 64.895372058696 | 1980 | 64.964834592342 | 1979 | 64.9778588174 | 1978 | 64.969176000695 | 1977 | 64.94746895893 | 1976 | 64.925761917166 | 1975 | 64.88668924199 | 1974 | 64.812885299991 | 1973 | 64.70435009117 | 1972 | 64.873665016931 | 1971 | 64.838933750108 | 1970 | 64.817226708344 | 1969 | 64.982200225753 | 1968 | 64.999565859165 | 1967 | 64.41781713988 | 1966 | 64.404792914822 | 1965 | 64.213770947295 | 1964 | 64.001041938005 | 1963 | 63.922896587653 | 1962 | 63.76660588695 | 1961 | 63.38890336025 |
|