Year | Value | 2022 | 0.081937239814226 | 2021 | 0.081937240530206 | 2020 | 0.36575826381514 | 2019 | 0.5641311133999 | 2018 | 0.60592913221255 | 2017 | 0.67937447392422 | 2016 | 0.75787449281193 | 2015 | 0.79236750580286 | 2014 | 0.73646397872167 | 2013 | 0.66974053554078 | 2012 | 0.69535313232227 | 2011 | 0.78150656223664 | 2010 | 0.78388864664652 | 2009 | 0.75639085959341 | 2008 | 0.78703262231894 | 2007 | 0.77866611244126 | 2006 | 0.73504867842129 | 2005 | 0.68661130607346 | 2004 | 0.56894311342132 | 2003 | 0.46564111360299 | 2002 | 0.42333707963628 | 2001 | 0.38497596956423 | 2000 | 0.3573008874216 | 1999 | 0.33340588218442 | 1998 | 0.29140608543239 | 1997 | 0.25755332328035 | 1996 | 0.25462638421509 | 1995 | 0.2645474168587 | 1994 | 0.25458648685891 | 1993 | 0.23974543928648 | 1992 | 0.27043118208188 | 1991 | 0.30924793231938 | 1990 | 0.29893055409588 | 1989 | 0.26031145007826 | 1988 | 0.22206389396178 | 1987 | 0.21263726069971 | 1986 | 0.23161022983434 | 1985 | 0.22695122545 | 1984 | 0.1582618632041 | 1983 | 0.034101373876153 | 1982 | 0.035842793834833 | 1981 | 0.034821732056118 | 1980 | 0.11951725412902 | 1979 | 0.089728661191823 | 1978 | 0.0053599076571217 | 1977 | 0.032873848239027 | 1976 | 0.024603832530328 | 1975 | 0.0074233627201988 | 1974 | 0.063059210153156 | 1973 | 0.19319818644469 | 1972 | 0.3390575157182 | 1971 | 0.41766661747402 | 1970 | 0.39872245794476 | 1969 | 0.41580326948499 | 1968 | 0.48676827963927 | 1967 | 0.53854376954226 | 1966 | 0.55130324946533 | 1965 | 0.64246877944356 | 1964 | 0.65025774875668 | 1963 | 0.7483664487173 | 1962 | 0.84866138773187 | 1961 | 0.76045993852192 |
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