Year	%
2006	1.7
2007	1.9
2008	1.9
2009	2.1
2010	1.9
2011	1.8
2012	1.7
2013	1.6
2014	1.5
2015	1.6
2016	1.8
2017	1.6
2018	1.6
2019	1.7
2020	1.7
2021	1.9