Year	%
2001	16.42884314365645
2002	17.40370572542913
2003	16.680747524585176
2004	17.3791192732543
2005	18.456683758552533
2006	18.110987194923936
2007	19.35570520853896
2008	17.192778101339545
2009	18.444265678178922
2010	18.41313767469805
2011	16.8960727250315
2012	18.18874492743073
2013	20.596504438583043
2014	18.591527707591343
2015	18.54060054885867
2016	18.072060337726093
2017	18.831126253109367
2018	18.25527099262194
2019	18.8312792609576
2020	18.566680997967474
2021	19.500355529644224
2022	17.302971026241906
2023	15.57235752411192