Year	%
2005	21.5459003039343
2006	22.9249264237646
2007	22.4772305345731
2008	20.4053322129654
2009	20.9948105298055
2010	17.7525801579801
2011	14.9437272531709
2012	13.5296315420868
2013	12.6409406273296
2014	11.6291669717805
2015	11.8584501648748
2016	12.9515014151532
2017	12.7606199307314
2018	12.5027652041209
2019	11.8586401367831
2020	11.5039275348061