Year	Percent
1990	0
1996	0.00207
1997	0.10059
1998	0.23496
1999	0.66711
2000	0.83525
2001	0.9041
2002	1.32166
2003	1.3744
2004	1.50791
2005	1.71619
2006	1.75449
2007	1.79056
2008	1.15
2009	1.61
2010	1.28
2011	2
2012	3.5
2013	5.1
2014	6.5
2015	7.9
2016	9.60154