Year	% of total
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	1.2223333333333333
2003	1.2223333333333333
2004	1.1459374999999998
2005	1.0785294117647057
2006	1.0186111111111111
2007	0.9167500000000001
2008	0.8527906976744185
2009	0.7639583333333333
2010	0.8334090909090909
2011	0.8148888888888888
2012	0.7971739130434783
2013	0.8334090909090909
2014	0.7051923076923077
2015	0.6918867924528301
2016	0.6918867924528301