Year	% of tax revenue
1990	2.0534412955465586
1991	2.8792618079449483
1992	3.384101328774575
1993	7.646718106783062
1994	12.011543246349277
1995	10.871265868982798
1996	10.29852467329618
1997	8.898022516117814
1998	2.509072706795145
1999	4.470229575935155
2000	13.117888216374682
2001	3.8302375407835663
2002	4.358812820028099
2014	2.682733749670156
2015	3.4525511008252874
2016	3.490687486345455
2017	3.2527858700841192
2018	3.7457517623900065
2019	3.6458081088379926
2020	4.089878845230848
2021	3.5860466897990246
2022	2.650929878150151