Year	Percent
1990	0
1992	0.00105
1993	0.02554
1994	0.09961
1995	0.14567
1996	0.85204
1997	2.30739
1998	6.75177
1999	12.3055
2000	21.38473
2001	26.69597
2002	32.3382
2003	34.97115
2004	42.25227
2005	48.62917
2006	51.63799
2007	55.7
2008	55.8
2009	55.9
2010	56.3
2011	61
2012	65.8
2013	57.05751
2014	63.66543
2015	71.06407
2016	78.78831
2017	80.14048