Year	Percent
1990	0
1997	0.17457
1998	0.23036
1999	0.28531
2000	0.56639
2001	1.6899
2002	2.24483
2003	2.79963
2004	3.07553
2005	3.35259
2006	4.46917
2007	4.74998
2008	5.03162
2009	6
2010	7
2011	11
2012	12.92249
2013	15.3
2014	21.2
2015	25.40701
2016	29.41173