Year	%
2001	9.73089413606573
2002	10.10761896944038
2003	9.926830930191016
2004	9.259214663121869
2005	7.917284549065351
2006	7.970961159056461
2007	9.010579854559982
2008	7.594142952474926
2009	7.753107958112733
2010	8.567175410122488
2011	11.041967710354385
2012	10.979143661547058
2013	12.378650247782485
2014	13.370740969896097
2015	15.848488714287413
2016	17.37476034321878
2017	16.074398204225208
2018	16.96174640196911
2019	19.165118025909667
2020	19.002083148657036
2021	20.220210964969397
2022	21.09615251505473
2023	20.778729409550017