Year	Percent
1990	0.33439
1991	0.5315
1992	1.32001
1993	1.96709
1994	3.25731
1995	6.47316
1996	9.64907
1997	14.06551
1998	22.24383
1999	39.17601
2000	43.98435
2001	49.37306
2002	61.29
2003	64.35
2004	68.52
2005	81
2006	83.7
2007	85.82
2008	87.42
2009	89.63
2010	90.72
2011	91.42
2012	92.85999
2013	93.9564
2014	91.66667
2015	91.72414
2016	90.41096
2017	93.19728