Year	% of tax revenue
1998	8.528437548323387
1999	6.71987207455364
2000	7.454470000670666
2003	6.41641087200752
2008	8.881993157503455
2009	7.204762138079763
2010	8.299417032804877
2011	5.72921569174431
2012	5.0234770046091475
2013	4.279985914842682
2014	3.274101142694611
2015	3.6498273421263376
2016	3.255440189280292
2017	2.7744842331798933
2018	2.465573561488527
2019	2.426625977827933
2020	2.0919979226567844
2021	2.5845397670781454
2022	2.7871140518036968