Year	Percent
2003	32.96783
2004	37.83261
2005	37.37625
2006	48.01172
2007	49.34963
2008	51.16014
2009	58.40779
2010	37.263
2011	34.75313
2012	48.03282
2013	45.93159
2014	45.17869
2015	40.58725
2016	34.20185
2017	36.38707