Year	%
2000	11.3
2001	11.6
2002	10.9
2003	11
2004	10.9
2005	11
2006	11.8
2007	11.7
2008	11.3
2009	11.4
2010	11.4
2011	12
2012	11.7
2013	11.8
2014	12.2
2015	13.2
2016	11.8
2017	12.2
2018	12.1
2019	12.2