Year	Percent
1990	0
1991	0.00523
1992	0.05213
1993	0.12996
1994	0.3891
1995	0.64775
1996	1.2952
1997	2.07347
1998	4.10227
1999	5.45644
2000	7.28543
2001	9.90067
2002	21.15
2003	24.87
2004	32.53
2005	38.81
2006	44.58
2007	48.6
2008	53.13
2009	58.97
2010	62.32
2011	61.95
2012	62.31
2013	62.8492
2014	66.6
2015	67.997
2016	73.3007
2017	75.98537