Year	%
2004	8.3
2005	7.1
2006	8.7
2007	8.7
2008	8.8
2009	8.8
2010	8.2
2011	8.1
2012	7.6
2013	7.5
2014	7.6
2015	7.8
2016	8
2017	7.9
2018	8.2
2019	8
2020	8.1
2021	9