Year	% of tax revenue
2004	0.1914784496630541
2005	0.20258189395217407
2006	0.22946824087700396
2010	0.5793452701216572
2011	0.6038978863573977
2012	0.47941920095528107
2013	0.5226398655633114
2014	0.4436499542338509
2015	0.5823088202255221
2016	0.49618909328531
2017	0.32122598042159073
2018	0.24369802408446706
2019	0.19795512413329913
2020	0.19970696967217016
2021	0.20521984147143288
2022	0.18273815530515305