Year	Percent
1990	0
1994	0.03699
1995	0.28001
1996	0.72727
1997	2.36413
1998	7.00332
1999	9.21201
2000	13.60859
2001	22.52122
2002	25.17188
2003	25.74212
2004	31.4841
2005	34.86293
2006	46.4
2007	47.327
2008	49.24
2009	54
2010	55.198
2011	60.2037
2012	61.31
2013	65.8
2014	69.78
2015	77.60013
2016	81.64299
2017	83.17409