Year	% of tax revenue
1990	3.595858753928637
1991	3.418352195862342
1992	10.35590124329739
1993	17.033909486739677
1994	11.141966461229755
1995	14.548597204949306
1996	13.96894191099308
1997	9.966714832862166
1998	8.591675257204104
1999	5.288423108931712
2000	3.9759733851763
2001	3.3137607434429923
2002	3.2086591631196586
2003	3.2754555628767412
2004	3.513688568561027
2005	3.9226578637682494
2006	4.002528674430858
2007	0.01807945260802256
2008	0.01576153614192704
2009	0.01982815306598974
2010	0.024066973283343368
2011	0.019334709532694203
2012	0.10809415537981991
2013	0.06971067906711449
2014	0.0911334861719739
2015	0.08496456871834786
2016	0.07083455620471615
2017	0.06631439448006099
2018	0.07201029901247522
2019	0.05398907366303613
2020	0.043808326946324284
2021	0.06652262132817421
2022	0.048084528160588544