Year	%
2002	10.82
2003	8.42
2004	10.39
2005	11.07
2006	11.23
2007	11.44
2008	12.73
2009	13.81
2010	14.13
2011	14.96
2012	13.23
2013	16.36
2014	15.82
2015	13.58
2016	12.75