Year	Percent
1960	0
1965	0
1970	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	0.0008
1997	0.00798
1998	0.01584
1999	0.0392
2000	0.07725
2001	0.106
2002	0.11823
2003	0.20127
2004	0.34906
2005	0.54214
2006	0.65759
2007	0.7
2008	0.81
2009	0.9
2010	1
2011	1.11
2012	1.22
2013	1.26422
2014	1.38
2015	4.86622
2016	5.17363