Year	Percent
1990	0
1993	0.00098
1994	0.00638
1995	0.03132
1996	0.06147
1997	0.09048
1998	0.14799
1999	0.29045
2000	0.64127
2001	0.83895
2002	2.72
2003	4.03789
2004	11.92
2005	12.75
2006	13.66
2007	16.03
2008	18.01
2009	20
2010	21.6
2011	25.6
2012	26.4
2013	29.4
2014	33.8946
2015	37.81938
2016	41.24807
2017	44.9502