Year	Percent
1990	0
1997	0.00467
1998	0.01806
1999	0.08728
2000	0.12678
2001	0.16402
2002	0.21509
2003	0.27882
2004	0.34751
2005	0.38449
2006	0.42514
2007	0.96586
2008	0.7
2009	1.07
2010	2.26
2011	3.33
2012	4.3506
2013	5.05
2014	5.83
2015	9.29815
2016	11.47