Year	% of tax revenue
2006	0.10073403013317532
2007	0.013664915806248549
2008	0.019409767891644246
2009	0.01739585430693347
2010	0.02947038944567716
2011	0.16834122720132005
2012	0.2075455037187205
2013	0.07154764067445123
2014	0.11402908404603883
2015	0.10725955474081256
2016	8.44683008879668
2017	0.873636283272927