Year	Percent
1990	0
1994	0.00912
1995	0.05274
1996	0.09457
1997	0.11165
1998	0.12866
1999	0.97074
2000	1.30047
2001	1.63109
2002	1.96041
2003	4.57522
2004	4.89901
2005	5.25298
2006	5.63179
2007	6.02125
2008	6.21
2009	15.3
2010	25
2011	32
2012	37.5
2013	41.9
2014	54.62281
2015	59.10238
2016	64.34603