Year | Value | 2022 | 0.36873481379783 | 2021 | 0.28713099491826 | 2020 | 0.27868463702792 | 2019 | 0.33966874550094 | 2018 | 0.25423340544576 | 2017 | 0.39146765072596 | 2016 | 0.48859802066258 | 2015 | 0.40301093938632 | 2014 | 0.50195569141734 | 2013 | 0.58738273950759 | 2012 | 0.571994215877 | 2011 | 0.55501929083077 | 2010 | 0.48551759090425 | 2009 | 0.43242132099023 | 2008 | 0.45943826859601 | 2007 | 0.54263106092016 | 2006 | 0.55130582200281 | 2005 | 0.50300349543671 | 2004 | 0.44303533452156 | 2003 | 0.30190967414604 | 2002 | 0.16821454398281 | 2001 | 0.15123940030524 | 2000 | 0.15978371147788 | 1999 | 0.14901826039544 | 1998 | 0.097180461244468 | 1997 | 0.012250290959733 | 1996 | 0.10154773615818 | 1995 | 0.20165009156398 | 1994 | 0.28387512746527 | 1993 | 0.35178551815908 | 1992 | 0.39114747970054 | 1991 | 0.26013589671743 | 1990 | 0.14857191343606 | 1989 | 0.21747276793284 | 1988 | 0.27340242006525 | 1987 | 0.34235866347315 | 1986 | 0.43366060746597 | 1985 | 0.52161846749272 | 1984 | 0.58633066940234 | 1983 | 0.64941826534352 | 1982 | 0.7211138010549 | 1981 | 0.65933999079041 | 1980 | 0.55793615591826 | 1979 | 0.60623877711954 | 1978 | 0.69615602186998 | 1977 | 0.75164001306738 | 1976 | 0.79583138114323 | 1975 | 0.89736133763507 | 1974 | 1.0025709358207 | 1973 | 1.0662585545188 | 1972 | 1.1409205149141 | 1971 | 1.2515428957436 | 1970 | 1.363111322468 | 1969 | 1.4184929160694 | 1968 | 1.4473798480411 | 1967 | 1.5213356366071 | 1966 | 1.5852694658278 | 1965 | 1.5885940087515 | 1964 | 1.583772632461 | 1963 | 1.6551301787059 | 1962 | 1.7553343684805 | 1961 | 1.7962051050264 |
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