Year	Percent
1990	0
1994	0.94065
1995	2.80196
1996	4.64719
1997	6.94837
1998	9.24522
1999	11.07461
2000	13.81508
2001	18.37577
2002	27.49443
2003	27.42907
2004	27.37701
2005	27.34432
2006	27.33261
2007	27.33934
2008	27.36178
2009	27.39651
2010	31.22
2011	35.6
2012	40.5479
2013	45.3
2014	50.07
2015	54.83914
2016	59.60832