Year	Percent
2003	12.1028
2004	13.0438
2005	13.42276
2006	13.99407
2007	13.58504
2008	15.01723
2009	14.24853
2010	14.93039
2011	14.841
2012	14.70579
2013	14.62369
2014	11.98295
2015	12.75264
2016	12.97316