Year | Value | 2021 | 0.45877225486563 | 2020 | 0.45877225486563 | 2019 | 0.45877225486563 | 2018 | 0.45806645139661 | 2017 | 0.45806645139661 | 2016 | 0.45806645139661 | 2015 | 0.45806645139661 | 2014 | 0.70933248636917 | 2013 | 0.49406242831684 | 2012 | 0.50288497167964 | 2011 | 0.57170080990948 | 2010 | 0.45700774619307 | 2009 | 0.557584740529 | 2008 | 0.49229791964427 | 2007 | 0.32114057840594 | 2006 | 0.35466624318459 | 2005 | 0.37672260159159 | 2004 | 0.39877895999859 | 2003 | 0.34407919114922 | 2002 | 0.43230462477723 | 2001 | 0.35290173451203 | 2000 | 0.61757803539604 | 1999 | 0.42348208141443 | 1998 | 0.40583699468883 | 1997 | 0.52935260176804 | 1996 | 0.60875549203324 | 1995 | 0.60875549203324 | 1994 | 0.69698092566125 | 1993 | 0.61757803539604 | 1992 | 0.44112716814003 | 1991 | 0.52935260176804 | 1990 | 0.74109364247525 | 1989 | 0.73050659043989 | 1988 | 0.72168404707709 | 1987 | 0.72168404707709 | 1986 | 0.71815502973197 | 1985 | 0.71815502973197 | 1984 | 0.71462601238685 | 1983 | 0.71462601238685 | 1982 | 0.71462601238685 | 1981 | 0.71109699504173 | 1980 | 0.71109699504173 | 1979 | 0.71109699504173 | 1978 | 0.70756797769661 | 1977 | 0.70756797769661 | 1976 | 0.70756797769661 | 1975 | 0.70756797769661 | 1974 | 0.70756797769661 | 1973 | 0.70756797769661 | 1972 | 0.70756797769661 | 1971 | 0.70580346902405 | 1970 | 0.70580346902405 | 1969 | 0.70580346902405 | 1968 | 0.70580346902405 | 1967 | 0.70580346902405 | 1966 | 0.70580346902405 | 1965 | 0.70580346902405 | 1964 | 0.70403896035149 | 1963 | 0.70403896035149 | 1962 | 0.70403896035149 | 1961 | 0.70403896035149 |
|