Year	%
1995	11.5
2000	12
2003	12.4
2004	12.3
2005	12
2006	11.9
2007	12.3
2008	12.5
2009	12.5
2010	12.3
2011	12.2
2012	11.7
2013	11.8
2014	11.9
2015	11.8
2016	12.2
2017	12.3
2018	12.4
2019	12.6
2020	12.5
2021	12.5