Year	Percent
1990	0
1993	0.40979
1994	1.07157
1995	2.89899
1996	5.07227
1997	7.59192
1998	10.1046
1999	12.61094
2000	15.11026
2001	30.17591
2002	27.83889
2003	31.85479
2004	40.81
2005	46.81
2006	54.01
2007	56.74
2008	58
2009	64
2010	70
2011	67.33999
2012	68.34997
2013	72.6756
2014	71.59
2015	73.0987
2016	75.4985
2017	78.88543