Year	%
2001	18.83900358851354
2002	18.621171614663456
2003	16.892675388368602
2004	19.278415142900606
2005	18.66033920898332
2006	18.110987194923936
2007	19.503223375844566
2008	17.192778101339545
2009	20.665832657031395
2010	20.02003143930532
2011	17.023971488975512
2012	18.40068321391709
2013	19.970518142957452
2014	19.803128530655652
2015	18.60684681165294
2016	20.03914732721094
2017	22.470742811325657
2018	19.234283732139076
2019	18.744417360572392
2020	18.664986665697565
2021	16.767584506756457
2022	16.482445086765857
2023	14.617697175091923