Year	%
2003	11.2
2004	11.2
2005	11.3
2006	11.1
2007	11.6
2008	11.7
2009	12
2010	11.8
2011	11.9
2012	12.1
2013	12
2014	12.2
2015	12
2016	12.3
2017	12.4
2018	12.6
2019	12.8
2020	12.4
2021	12.2