Year	Percent
2004	9.75261
2005	8.62014
2006	11.13951
2007	12.71795
2008	12.83853
2009	11.61191
2010	11.15792
2011	12.48182
2012	11.09753
2013	10.42529
2014	10.46635
2015	10.45956
2016	14.11811