Year	Percent
1990	0
1996	0.05685
1997	0.13951
1998	0.27419
1999	0.5383
2000	2.10834
2001	2.83057
2002	3.51004
2003	3.9033
2004	4.7466
2005	5.08233
2006	5.85059
2007	6.8
2008	7.26912
2009	7.5
2010	8
2011	9.2
2012	10.598
2013	11.3
2014	18.8
2015	22.3514
2016	24