Year | Value | 2022 | 0.80422842688024 | 2021 | 0.82823272086807 | 2020 | 0.42347525027949 | 2019 | 0.20178660097072 | 2018 | 0.21382420699767 | 2017 | 0.10978232295058 | 2016 | 0.087721087870645 | 2015 | 0.13285323672534 | 2014 | 0.056151567510169 | 2013 | 0.038380000266785 | 2012 | 0.15661760024891 | 2011 | 0.23428291415769 | 2010 | 0.21852275595938 | 2009 | 0.24591544129532 | 2008 | 0.34541505429852 | 2007 | 0.45884753562264 | 2006 | 0.61229619803105 | 2005 | 0.68300556001069 | 2004 | 0.68216947224392 | 2003 | 0.69980919091893 | 2002 | 0.63656566643635 | 2001 | 0.51296668834131 | 2000 | 0.47113133464355 | 1999 | 0.45002984349372 | 1998 | 0.45043523718193 | 1997 | 0.41560444340053 | 1996 | 0.33667134103021 | 1995 | 0.32441482958704 | 1994 | 0.11819601732814 | 1993 | 0.22077179334749 | 1992 | 0.21969071848562 | 1991 | 0.046135586258973 | 1990 | 0.19006508287506 | 1989 | 0.29542118974314 | 1988 | 0.28640580537752 | 1987 | 0.674806569806 | 1986 | 0.67939116352749 | 1985 | 0.65376144340305 | 1984 | 0.67838056948223 | 1983 | 0.68301402178347 | 1982 | 0.67741201260059 | 1981 | 0.69240187749863 | 1980 | 0.61372221551537 | 1979 | 0.61751203603289 | 1978 | 0.65304634866691 | 1977 | 0.55102396494448 | 1976 | 0.46863436496573 | 1975 | 0.52895066025525 | 1974 | 0.64939628015501 | 1973 | 0.74057707348447 | 1972 | 0.80190354142147 | 1971 | 0.83254242697463 | 1970 | 0.88550194213785 | 1969 | 0.96162997685679 | 1968 | 1.0068374200889 | 1967 | 1.0199295102439 | 1966 | 0.99958674711715 | 1965 | 1.0012325806175 | 1964 | 1.0257699902233 | 1963 | 1.0161882317762 | 1962 | 0.97108747019357 | 1961 | 0.88913136293878 |
|