Year	%
2002	12.04
2003	10.24
2004	11.25
2005	10.1
2006	10.46
2007	10.91
2008	10.62
2009	10.36
2010	9.62
2011	9.56
2012	10.79
2013	10.57
2014	10.01
2015	11.09
2016	12.64
2017	12.04
2018	13.21
2019	12.83