Year	%
2003	2
2004	2.5
2005	2.7
2006	2.8
2007	3
2008	2.9
2009	2.8
2010	2.5
2011	2.6
2012	2.6
2013	2.4
2014	2.4
2015	2.7
2016	2.9
2017	3
2018	3
2019	3
2020	3
2021	3.1