Year	%
2004	8.7
2005	8.7
2006	9.3
2007	9.5
2008	9.2
2009	8.6
2010	8.5
2011	8.7
2012	8.6
2013	8.3
2014	8.4
2015	8.5
2016	8.7
2017	9.4
2018	8.8
2019	9.5
2020	9.1
2021	9.1