Year	Percent
1990	0
1992	0.00512
1993	0.0164
1994	0.03483
1995	0.04383
1996	0.08616
1997	0.11022
1998	0.12527
1999	0.82337
2000	1.46219
2001	2.67044
2002	4.2608
2003	4.46023
2004	4.83444
2005	5.99426
2006	7.2
2007	10.8
2008	18.8
2009	24.6
2010	29.03
2011	31.36681
2012	35.13515
2013	40.27912
2014	45.59039
2015	48.94043
2016	54.06292
2017	57.27224