Year	Percent
2005	53.53896
2006	54.69429
2007	57.04289
2008	57.04912
2009	57.88959
2010	62.27782
2011	61.23331
2012	66.34238
2013	66.70041
2014	66.73026
2015	65.11352
2016	64.56923