Year	% of tax revenue
1990	0.19652536365681494
1991	0.05540773745967067
1992	0.01960644517324968
1993	0.00019905607608719451
1994	0.0001979594341527534
1998	0.016432496423135923
1999	0.018827012218081723
2000	0.009886143475145307
2001	0.005636893846015092
2002	0.00616366339146514
2003	0.005118699692779582
2004	0.004545239679578783
2005	0.003995387690081643
2016	2.9372938353698684E-06
2017	4.069568942987054E-06
2018	2.461097731715885E-06
2019	1.740420272647974E-06
2020	4.4264796472274235E-06
2022	1.460883246401149E-07