Year	Percent
2005	10.15987
2006	10.53361
2007	10.14543
2008	10.76776
2009	11.68671
2010	12.0632
2011	12.59734
2012	12.79424
2013	11.95224
2014	12.74207
2015	12.92326
2016	12.57954
2017	13.19086