Year	Percent
2002	6.07701
2004	6.70211
2005	6.94716
2006	9.91944
2007	11.05092
2009	17.78778
2010	13.31665
2011	13.52793
2013	16.37783
2014	11.27614
2015	14.38872
2016	13.7232