Year | Value | 2022 | 0.10121106640046 | 2021 | 0.082446609115856 | 2020 | 0.019744819418745 | 2019 | 0.039880673587146 | 2018 | 0.14138793187973 | 2017 | 0.24675383930737 | 2016 | 0.32121688556848 | 2015 | 0.32838451287479 | 2014 | 0.30953057428272 | 2013 | 0.29758713538681 | 2012 | 0.28208319300115 | 2011 | 0.26766815379706 | 2010 | 0.25370313215015 | 2009 | 0.24040912846351 | 2008 | 0.22431367574057 | 2007 | 0.19152206004265 | 2006 | 0.1390673974987 | 2005 | 0.11653533132166 | 2004 | 0.10866542041562 | 2003 | 0.11368303851529 | 2002 | 0.16654108804677 | 2001 | 0.26436492092412 | 2000 | 0.40361103715384 | 1999 | 0.49773508410804 | 1998 | 0.54132496174707 | 1997 | 0.5697434730624 | 1996 | 0.56979768402687 | 1995 | 0.57375265725676 | 1994 | 0.57211350807679 | 1993 | 0.56960267222799 | 1992 | 0.58380482507323 | 1991 | 0.58736145816086 | 1990 | 0.61539388480999 | 1989 | 0.65188521182136 | 1988 | 0.6183627520897 | 1987 | 0.5764613687556 | 1986 | 0.56012727926318 | 1985 | 0.52923692353645 | 1984 | 0.49887299083406 | 1983 | 0.47226803303978 | 1982 | 0.44088990687893 | 1981 | 0.41643176041484 | 1980 | 0.44180397215144 | 1979 | 0.50758908546028 | 1978 | 0.56598359844977 | 1977 | 0.62868057519526 | 1976 | 0.66447802297105 | 1975 | 0.64130471374658 | 1974 | 0.58916807935056 | 1973 | 0.55635518471609 | 1972 | 0.55429925353609 | 1971 | 0.5442351261594 | 1970 | 0.58617527105892 | 1969 | 0.70690157248225 | 1968 | 0.82278677541402 | 1967 | 0.91258442622911 | 1966 | 0.98759827602129 | 1965 | 1.0520268126909 | 1964 | 1.1161541018096 | 1963 | 1.1694398137616 | 1962 | 1.214235518588 | 1961 | 1.2625276390362 |
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