Year	Percent
1990	0.08736
1991	0.17423
1992	0.26062
1993	0.51976
1994	1.03661
1995	1.89517
1996	4.12365
1997	7.3854
1998	13.66998
1999	21.29364
2000	26.82175
2001	33.48109
2002	56.48
2003	64.82
2004	65.61
2005	70
2006	68.82
2007	75.09
2008	78.39
2009	83.56
2010	85
2011	85.38
2012	87.48
2013	89.8441
2014	91.61
2015	92.0003
2016	94.7758