Year	% of tax revenue
2004	4.26517618126101
2005	4.7927921405213985
2006	4.47201439033627
2007	4.776170965214519
2008	6.033193171647852
2009	4.842537253886848
2010	4.971862217519737
2011	5.578344735627678
2012	5.767333602135408
2013	4.710260636153355
2014	4.640430438650313
2015	5.824363770632692
2016	5.141101077986822
2017	6.275394893926939
2018	6.389419705048949
2019	6.5249850544656205
2020	5.0516365593070365
2021	5.515313648061128
2022	3.0548110265896806