Year	% of tax revenue
1990	0.8088978766430739
1991	4.9621242646466275
1992	5.835775389989048
1993	7.7037499587512155
1994	7.329980131545211
1995	8.977650256720024
1996	10.101946246524559
1997	8.765710602642605
1998	9.333150509621097
1999	8.7591861912004
2000	6.27796516830729
2001	4.634798373467444
2002	3.734238216996838
2003	3.78507837211143
2004	3.8200423198006934
2005	4.0862755741460655
2006	3.9718251246021343
2007	0.07339528180841688
2008	0.057607564469155124
2009	0.057965580778120085
2010	0.02609237612672919
2011	0.0087047095446151
2012	0.08996889084024752
2013	0.014173409435925047
2014	0.000666692778800503
2015	0.0019287662127636844
2016	0.003418721071986611
2017	0.03525713222403949
2018	0.041393368941779606
2019	0.044223963061047145
2020	0.034034915196887026
2021	0.05760579092750944
2022	0.07296171558917476