Year	%
2002	3.46
2003	4.82
2004	4.82
2005	4.31
2006	4.29
2007	3.99
2008	4.03
2009	3.5
2010	4.62
2011	4.62
2012	4.25
2013	4.49
2014	3.9
2015	3.86
2016	3.86
2017	3.88
2018	3.9
2019	3.9
2020	3.84
2021	3.86