Year	%
2001	12.24
2002	12.14
2003	11.7
2004	12.37
2005	12.7
2006	11.28
2007	12.12
2008	11.04
2009	12.37
2010	9.71
2011	11.18
2012	10.58
2013	10.84
2015	11.63
2017	11.84
2018	12.81