Year	Percent
1994	11.10159
1995	1.00938
1996	3.94226
1997	12.11458
1998	11.13314
1999	34.34861
2000	44.95406
2001	36.81704
2002	32.21582
2003	33.23022
2004	37.96402
2005	35.42455
2006	27.06454
2007	24.44064
2008	33.29186
2009	22.12559
2010	38.56908
2011	46.51778
2012	47.19854
2013	43.05244
2014	36.96184
2015	20.05557
2016	5.86313