Year	% of tax revenue
1990	1.8871381458409675
1991	1.223735081526307
1992	1.2930757877173844
1993	1.4493719388265085
1994	4.537970775879811
1995	10.83474511011859
1998	6.70401436132347
1999	3.8683627838318935
2012	0.4294134224100903
2013	0.5883033294467386
2014	0.6841246828561073
2015	0.7241035424706239
2016	0.6981027024711979
2017	0.9078857510143414
2018	1.3307616387065242
2019	1.1341515292965405
2020	1.2836909461672736
2021	1.3603861975168743