Year | Value | 2022 | 60.69908200373 | 2021 | 64.873842657251 | 2020 | 68.589642811511 | 2019 | 66.738935868579 | 2018 | 66.001127436154 | 2017 | 66.396144126411 | 2016 | 67.35461090444 | 2015 | 67.19943166746 | 2014 | 66.564142304895 | 2013 | 66.347182321137 | 2012 | 65.638034860643 | 2011 | 64.482033724111 | 2010 | 65.223090790591 | 2009 | 68.291934455247 | 2008 | 69.045033648376 | 2007 | 71.889159215946 | 2006 | 71.296225510126 | 2005 | 72.47199788082 | 2004 | 75.090349870561 | 2003 | 76.267506179995 | 2002 | 74.879695366217 | 2001 | 70.039220759973 | 2000 | 68.18236601613 | 1999 | 80.548253773921 | 1998 | 73.474959809198 | 1997 | 68.524068505795 | 1996 | 69.924141142539 | 1995 | 69.406119634132 | 1994 | 67.796950288015 | 1993 | 67.535307320913 | 1992 | 72.356219782249 | 1991 | 73.359706872098 | 1990 | 73.024204845468 | 1989 | 69.343426760942 | 1988 | 72.114453558219 | 1987 | 71.411563658447 | 1986 | 75.208760174712 | 1985 | 72.424958404067 | 1984 | 72.352701976226 | 1983 | 71.666648574716 | 1982 | 81.334706184201 | 1981 | 76.531919225572 | 1980 | 70.834204336164 | 1979 | 72.589569529186 | 1978 | 78.446320232129 | 1977 | 76.46062480603 | 1976 | 77.937116514835 | 1975 | 79.084041922088 | 1974 | 75.640642510273 | 1973 | 81.539668907513 | 1972 | 83.602103418054 | 1971 | 86.427015250545 | 1970 | 89.37125748503 | 1969 | 94.150110375276 | 1968 | 95.903085801498 | 1967 | 100.08256664308 | 1966 | 104.81164925609 | 1965 | 93.767608603965 | 1964 | 88.729235298241 | 1963 | 92.084268262279 | 1962 | 94.622125683469 | 1961 | 93.809827696235 | 1960 | 91.363403382881 |
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