Year	Percent
1990	0
1998	0.29585
1999	0.3632
2000	4.63852
2001	6.31092
2002	7.58067
2003	10.16184
2004	13.32285
2005	13.75948
2006	14.18202
2007	14.59048
2008	15.48
2009	16.41
2010	18.75
2011	20.1612
2012	21.5724
2013	23
2014	24.41
2015	25.82
2016	28