Year	Percent
1990	0
1993	0.00234
1994	0.01953
1995	0.11967
1996	0.72525
1997	1.21981
1998	1.84497
1999	2.90815
2000	5.37092
2001	7.6123
2002	9.08
2003	12.04
2004	18.13
2005	19.97
2006	27.09
2007	33.64
2008	39.67
2009	45
2010	46.23
2011	47.97999
2012	51.89999
2013	53.0615
2014	55.49
2015	56.6563
2016	59.82555
2017	63.4101