Year	Percent
1990	0
1998	0.00966
1999	0.03778
2000	0.11104
2001	0.18166
2002	0.2679
2003	0.33391
2004	0.36143
2005	0.85036
2006	1.16989
2007	1.64
2008	3.55
2009	6
2010	7
2011	9
2012	10.74768
2013	12.5
2014	14.26
2015	18.2
2016	21.87