Year	Percent
1995	21.3372
2000	19.3921
2001	36.3554
2002	43.7417
2003	38.516
2004	39.1962
2005	34.9819
2006	34.5233
2007	34.0546
2008	39.4822
2009	37.2144
2010	36.767
2011	32.1424
2012	34.5009
2013	36.9465
2014	39.9382
2015	36.3257
2016	36.191
2017	37.3731