Year | Value | 2021 | 0.82172204358699 | 2020 | 0.82172204358699 | 2019 | 0.82172204358699 | 2018 | 0.82172204358699 | 2017 | 0.82172204358699 | 2016 | 0.82172204358699 | 2015 | 0.82172204358699 | 2014 | 0.82172204358699 | 2013 | 0.78599499821365 | 2012 | 0.78599499821365 | 2011 | 0.71454090746695 | 2010 | 0.71454090746695 | 2009 | 0.6788138620936 | 2008 | 0.6788138620936 | 2007 | 0.64308681672026 | 2006 | 0.60735977134691 | 2005 | 0.64308681672026 | 2004 | 0.60735977134691 | 2003 | 0.57163272597356 | 2002 | 0.53590568060021 | 2001 | 0.53590568060021 | 2000 | 0.50017863522687 | 1999 | 0.50017863522687 | 1998 | 0.46445158985352 | 1997 | 0.42872454448017 | 1996 | 0.42872454448017 | 1995 | 0.42872454448017 | 1994 | 0.39299749910682 | 1993 | 0.39299749910682 | 1992 | 0.39299749910682 | 1991 | 0.39299749910682 | 1990 | 0.39299749910682 | 1989 | 0.39299749910682 | 1988 | 0.35727045373348 | 1987 | 0.35727045373348 | 1986 | 0.46445158985352 | 1985 | 0.46445158985352 | 1984 | 0.46445158985352 | 1983 | 0.46445158985352 | 1982 | 0.46445158985352 | 1981 | 0.42872454448017 | 1980 | 0.42872454448017 | 1979 | 0.42872454448017 | 1978 | 0.42872454448017 | 1977 | 0.39299749910682 | 1976 | 0.35727045373348 | 1975 | 0.35727045373348 | 1974 | 0.35727045373348 | 1973 | 0.35727045373348 | 1972 | 0.35727045373348 | 1971 | 0.35727045373348 | 1970 | 0.35727045373348 | 1969 | 0.35727045373348 | 1968 | 0.35727045373348 | 1967 | 0.35727045373348 | 1966 | 0.35727045373348 | 1965 | 0.35727045373348 | 1964 | 0.35727045373348 | 1963 | 0.35727045373348 | 1962 | 0.35727045373348 | 1961 | 0.35727045373348 |
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