Year	Percent
2002	10.86616
2003	11.09102
2004	12.69901
2005	11.75282
2006	12.12248
2007	12.6857
2008	11.86433
2009	12.51525
2010	12.72043
2011	13.74683
2012	15.6261
2013	16.81711
2014	15.3717
2015	15.07493
2016	15.83589