Year	Percent
1990	0
1992	0.00111
1993	0.08151
1994	0.27991
1995	0.41683
1996	0.84106
1997	1.64022
1998	2.66638
1999	3.90432
2000	5.80025
2001	9.55948
2002	19.89485
2003	20.33361
2004	20.79231
2005	22.07
2006	25.1
2007	28.4
2008	32.29
2009	34.33
2010	36.5
2011	39.2122
2012	47.5
2013	45.96
2014	53
2015	59.76295
2016	66.02871
2017	71.58166