Year	%
2002	4
2003	4.82
2004	4.82
2005	4.81
2006	4.81
2007	4.35
2008	4.45
2009	4.23
2010	4.24
2011	4.24
2012	4.33
2013	4.19
2014	4.18
2015	4.04
2016	4.04
2017	4.02
2018	4.07
2019	4.09
2020	4.12
2021	4