Year	Percent
1990	0
1999	0.13757
2000	0.40094
2001	0.86463
2002	1.6758
2003	2.43691
2004	3.15698
2005	3.84711
2006	4.51832
2007	5.92
2008	6.55
2009	7.17
2010	13.6
2011	14.4
2012	15.6
2013	22.4
2014	30.3
2015	39.8
2016	41.77264