Year	% of tax revenue
1990	29.31174089068826
1991	29.640287769784173
1992	25.64042790167586
1993	20.491921970997705
1994	21.711276613864012
1995	24.04884299833557
1996	22.267160058336927
1997	22.159048959576257
1998	24.89050181454136
1999	24.15899533299402
2000	23.136605786749605
2001	19.22920081931298
2002	24.40577511259804
2014	2.7413727387339843
2015	2.7199053430043865
2016	2.8837920976081137
2017	2.847909486021791
2018	3.9932586209502534
2019	4.682166331017145
2020	3.667259286964005
2021	3.41167533026245
2022	2.8556699178392795