Year	Percent
1990	0
1996	0.00285
1997	0.00558
1998	0.01096
1999	0.0538
2000	0.21181
2001	0.26115
2002	1.08394
2003	1.5325
2004	2.17552
2005	2.58025
2006	2.97971
2007	3.44543
2008	3.58
2009	3.72
2010	3.86
2011	7
2012	10
2013	15
2014	22
2015	25
2016	27.36