Year	% of tax revenue
2012	9.570478649736321
2013	10.831188224461204
2014	12.032783477228293
2015	11.121027767224986
2016	10.739125681601571
2017	10.42175204082091
2018	10.962853432072212
2019	10.866289541344912
2020	9.674771811350489
2021	11.02882732878829