Year	Percent
1990	0
1996	0.00162
1997	0.0079
1998	0.00924
1999	0.07513
2000	0.11719
2001	0.1713
2002	0.22248
2003	0.67696
2004	0.87757
2005	1.1
2006	1.3
2007	1.6
2008	1.9
2009	2.4
2010	2.9
2011	3.2
2012	3.95
2013	4.4
2014	7
2015	10
2016	13