Year	% of tax revenue
2004	20.800942248396446
2005	21.871421347965565
2006	21.325395288830975
2007	21.026805231975707
2008	23.48495992276248
2009	23.945648962338318
2010	24.894922750589448
2011	24.61913258303596
2012	24.513423298780342
2013	25.97219162702294
2014	23.422298313654448
2015	21.465487310151453
2016	19.526194721246814
2017	20.673766025811975
2018	21.79641597072857
2019	21.199395222958877
2020	18.938836196917624
2021	19.103404480175083
2022	19.89769417072625