Year	Percent
1994	24.52408
1995	35.08541
1996	35.76541
1997	35.43186
1998	31.97428
1999	18.88231
2000	20.15129
2001	29.11967
2002	32.64713
2003	34.86569
2004	31.51101
2005	34.30789
2006	41.88871
2007	46.01657
2008	41.11797
2009	42.96405
2010	31.27687
2011	29.03184
2012	27.1444
2013	27.82784
2014	31.79011
2015	38.20356
2016	45.23692