Year	% of tax revenue
1992	0.031903703363119505
1993	0.005338388802482755
1994	0.34827448409442235
2011	0.0016268843775656579
2012	0.010424824381607908
2013	0.022702124907837386
2014	0.007774616193367125
2015	0.010422114583023546
2016	0.00851124055558994
2017	0.08745850415314473
2018	0.0429238128896697
2019	0.23822090985687105
2020	0.03505761633070351
2021	0.041489902362318976