Year	Percent
1990	0
1995	0.10294
1996	0.37539
1997	3.29559
1998	6.9083
1999	14.9427
2000	23.6253
2001	26.27175
2002	28.31649
2003	29.47795
2004	30.1313
2005	40
2006	52
2007	61
2008	63
2009	64
2010	68
2011	78
2012	84.99999
2013	88
2014	90.4
2015	90.5
2016	90.60001
2017	94.81992