Year	%
2004	6.5
2005	6.1
2006	6
2007	6.1
2008	5.7
2009	6.6
2010	7.6
2011	7.1
2012	8.2
2013	8.5
2014	7.6
2015	7.5
2016	7
2017	6.4
2018	5.3
2019	5.6
2020	5.4
2021	5.4