Year	% of tax revenue
1990	4.1216926469080155
1991	4.713642213642215
1992	7.147938147889798
1993	12.465170963383278
1994	10.654336464727047
1995	2.557544757033248
1996	3.285703923986364
1997	1.9241443108233118
1998	1.704787851117814
1999	1.2827663134411602
2000	1.1186388589018923
2001	1.0640698680019725
2002	3.0025305742150525
2003	3.497290250266869
2004	2.914004390601761
2005	2.6925583686954213
2006	2.0840641029595925
2007	1.4351640192742077
2008	1.2591756181079454
2009	0.9928082992771663
2010	0.8236974377834988
2012	0.5506595471218217
2013	0.2847503369298695
2014	0.26945858407793
2015	0.22940478576867837
2016	0.1732477754586625
2017	0.2219758771604523
2018	0.17577084869199064
2019	0.16389916788937858
2020	0.27374286584764373
2021	0.30581226473628975
2022	0.21008305861122448