Year	% of tax revenue
2008	36.28715922651292
2009	37.34941186668091
2010	35.77210784679222
2011	30.2617270075225
2012	27.384078203653257
2013	23.304884007566727
2014	9.479372474006727
2015	25.087533999207146
2016	25.343259583287402
2017	15.3751706889975
2018	6.02556109236275
2019	7.756159872620037
2020	23.631296944071682