Year	Percent
1990	0
1997	0.00677
1998	0.01322
1999	0.12907
2000	0.25212
2001	0.27705
2002	0.36087
2003	0.58762
2004	0.97608
2005	1.40265
2006	2.02874
2007	2.93
2008	3.4
2009	3.84
2010	4.3
2011	5
2012	7.5
2013	10
2014	16.21487
2015	20.68015
2016	25
2017	23.20297