Year	Percent
1990	0
1996	0.00304
1997	0.01184
1998	0.0202
1999	0.05625
2000	0.10959
2001	0.16003
2002	0.25961
2003	0.41954
2004	0.67945
2005	0.85436
2006	0.84295
2007	0.91
2008	1.56
2009	2.68
2010	4.17
2011	4.3
2012	6
2013	7.29394
2014	9.23631
2015	16.93353
2016	17.52124