Year	%
2001	19.229377304290786
2002	18.621171614663456
2003	17.221107517259476
2004	19.637833339937394
2005	19.3265172829582
2006	17.617572656611785
2007	20.70491248484215
2008	17.997260801068634
2009	20.3589468116486
2010	20.23541452515861
2011	22.16826412919537
2012	22.042638129365642
2013	23.608376904575756
2014	21.73593643542047
2015	21.846723297255622
2016	18.718436476922413
2017	21.889413543389903
2018	19.17343169338096
2019	18.879463522894525
2020	19.45898186152704
2021	19.787851126982847
2022	17.304066881908923
2023	15.101247221980397