Year	Percent
1990	0
1996	0.01513
1997	0.05943
1998	0.14367
1999	0.19437
2000	1.08296
2001	1.20053
2002	2.64827
2003	3.96504
2004	15.46897
2005	21.3267
2006	25.12239
2007	27.92
2008	34.66
2009	37.74
2010	42.75
2011	43.88769
2012	45.0645
2013	48.52131
2014	49.91773
2015	52.6
2016	60.26
2017	69.49115