Year	% of total
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	3.389830508474576
1998	2.5316455696202533
1999	2.7777777777777777
2000	2.380952380952381
2001	3.0303030303030303
2002	3.1746031746031744
2003	2.5
2004	1.2345679012345678
2005	0.9345794392523363
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	4.093567251461988