Year	Percent
1990	0
1996	1.5266
1997	3.05018
1998	6.88621
1999	7.63569
2000	10.53884
2002	11.26047
2003	13.54641
2004	26.83795
2005	37.60577
2006	48.93685
2007	70.87
2008	70.04
2009	78.53
2010	81
2011	81
2012	86.43442
2013	94
2014	95.9
2015	96.91
2016	97.93064