Year	Percent
1990	0
1995	0.12323
1996	0.16379
1997	0.51087
1998	0.76513
1999	1.01797
2000	2.4344
2001	2.82537
2002	2.9073
2003	2.98582
2004	3.95237
2005	4.90778
2006	5.85394
2007	7.17987
2008	8.11077
2009	10
2010	16
2011	25
2012	30
2013	32.75396
2014	35.95444
2015	38.65127
2016	39.95