Year	% of tax revenue
2011	0.12684343065515838
2012	0.09676483496428222
2013	0.09459610618208657
2014	0.07545758638686562
2015	0.6347289055061812
2016	0.7919620821125146
2017	0.38174742768501235
2018	0.16688041030817238
2019	0.010966917210337015
2020	0.007518455712796056