Year	Percent
1990	0
1994	0.00738
1995	0.01119
1996	0.02762
1997	0.04366
1998	0.10794
1999	1.60249
2000	2.75074
2001	4.29797
2002	5.25289
2003	6.49085
2004	8.52882
2005	9.65509
2006	12.98641
2007	17.1
2008	27.53
2009	34.07
2010	36.8
2011	39.1
2012	41.4416
2013	43.8
2014	46.16
2015	46.5
2016	49.6
2017	55.5