Year	Percent
1990	0
1995	0.00103
1996	0.0504
1997	0.08855
1998	0.0961
1999	0.47072
2000	0.92619
2001	1.28159
2002	1.8162
2003	2.43707
2004	3.22869
2005	3.69696
2006	3.69654
2007	4.1
2008	6.85
2009	8.94
2010	11.04
2011	18.13
2012	20.78178
2013	24.7
2014	26.17501
2015	25.64304
2016	28.57352