Year	%
2002	4
2003	4.82
2004	4.82
2005	4.19
2006	4.12
2007	3.88
2008	4.18
2009	3.19
2010	4.24
2011	4.24
2012	4.27
2013	4.09
2014	3.48
2015	3.28
2016	3.28
2017	3.26
2018	3.3
2019	3.3
2020	3.3
2021	3.19