Year	% of tax revenue
2002	29.740059016436522
2003	26.83449662462546
2004	28.261089341712886
2005	27.11859604975601
2006	25.2413801832509
2007	25.898953894797373
2008	24.028390228747597
2009	22.845495297846764
2010	22.09582393092715
2011	19.256489043662548
2012	18.507499020333135
2013	17.21367389486148
2014	16.80842092484523
2015	16.893731134307203
2016	16.248632749118368
2017	13.542015604972985
2018	13.568310169013067
2019	13.120805283797887
2020	11.479709354134318
2021	11.541599301792937