Year	Percent
1990	0
1992	0.03655
1993	0.07178
1994	0.14108
1995	0.34698
1996	0.68348
1997	1.05709
1998	1.66232
1999	4.10342
2000	16.6
2001	19.1
2002	22.1
2003	25.47378
2004	28.17791
2005	31.17535
2006	34.49775
2007	35.9
2008	37.3
2009	41.56
2010	45
2011	52.24961
2012	55.05
2013	58
2014	61.11
2015	76.63
2016	83.56
2017	82.32749