Year	Percent
1990	0
1991	0.50513
1992	1.53916
1993	2.66783
1994	6.79481
1995	11.21588
1996	14.80648
1997	27.47887
1998	36.26421
1999	41.29457
2000	44.47053
2001	49.393
2002	79.12
2003	83.14
2004	83.88
2005	87
2006	89.51
2007	90.6
2008	91
2009	93
2010	93.39
2011	94.81969
2012	96.2098
2013	96.5468
2014	98.16
2015	98.2
2016	98.24002