Year	% of tax revenue
1990	17.974091399784093
1991	3.273802953707587
1992	1.0609446702243572
1993	0.18516369314525064
1994	0.16299645805350682
1995	0.16985199299420675
1996	0.471233615863666
1997	0.5328157109906994
1998	0.1037167643332864
1999	0.09754050262504421
2000	0.11737690051850605
2001	0.20195005527684318
2002	15.502034725548269
2003	17.94787483137994
2004	15.306827700557749
2005	15.231688304882681
2006	14.245367432931491
2007	16.639127339163608
2008	22.987092126412644
2009	18.294640060673675
2010	20.776639571648694
2011	19.30177735659655
2012	17.986021034590944
2013	13.083578919497624
2014	14.001733709278586
2015	9.760207433199971
2016	7.061165753350618
2017	5.556887053203816
2018	6.300589333624732
2019	16.50532200973775
2020	12.300964221644467
2021	16.97268308570086
2022	16.409205496565292