Year | Value | 2022 | 0.40021908038092 | 2021 | 0.0052305571396261 | 2020 | 0.12788369337953 | 2019 | 0.10544065743923 | 2018 | 0.22653606671086 | 2017 | 0.19925972963348 | 2016 | 0.28090359430667 | 2015 | 0.28972414325932 | 2014 | 0.33397738479391 | 2013 | 0.3330329540554 | 2012 | 0.21421041911233 | 2011 | 0.21854596630449 | 2010 | 0.23087627565812 | 2009 | 0.31979683967424 | 2008 | 0.48339908744804 | 2007 | 0.51313679501617 | 2006 | 0.46200521181019 | 2005 | 0.51270457141732 | 2004 | 0.54467387993722 | 2003 | 0.5372387908166 | 2002 | 0.48389805621594 | 2001 | 0.32815445678618 | 2000 | 0.31041266466356 | 1999 | 0.24883589833422 | 1998 | 0.20739353305814 | 1997 | 0.22874898107443 | 1996 | 0.23613509690537 | 1995 | 0.24413652043025 | 1994 | 0.30317487991172 | 1993 | 0.41091535766323 | 1992 | 0.420608761951 | 1991 | 0.48770471361483 | 1990 | 0.44946555522563 | 1989 | 0.41843042206189 | 1988 | 0.32731638872751 | 1987 | 0.27090075740261 | 1986 | 0.24495492297795 | 1985 | 0.18784445158893 | 1984 | 0.16526783143789 | 1983 | 0.20721681010502 | 1982 | 0.29061455424755 | 1981 | 0.39925784605499 | 1980 | 0.44533784655275 | 1979 | 0.42443205773961 | 1978 | 0.42028086783642 | 1977 | 0.40502599889327 | 1976 | 0.43640431070404 | 1975 | 0.50081421795667 | 1974 | 0.55855263328203 | 1973 | 0.63362274185801 | 1972 | 0.68126044406873 | 1971 | 0.5650825483647 | 1970 | 0.56326878780209 | 1969 | 0.69611696750971 | 1968 | 0.69929271101526 | 1967 | 0.74149612180814 | 1966 | 0.84239947323587 | 1965 | 0.88889728376044 | 1964 | 0.88089818823067 | 1963 | 0.88011974764993 | 1962 | 0.87485322217613 | 1961 | 0.86964661692139 |
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