Year	%
2000	15.16
2006	19.03
2008	19.91
2009	19.73
2010	20.21
2011	20.97
2012	19.65
2013	19.01
2014	18.37
2015	17.74
2016	17.01
2017	17.1
2018	17.01
2019	17.34
2020	16.57
2021	20.4