Year	% of tax revenue
1992	23.295819935691316
1993	16.495750068951683
1994	17.42777906170557
1995	15.033059538579932
1996	18.168348267833203
1997	7.332231606054769
1998	0.9477653489902312
1999	5.523099429002879
2000	10.07405928266449
2001	12.735816697537217
2002	11.464890095225092
2003	9.41334609220855
2006	5.641526943450667
2007	8.271529416038414
2008	10.008195208699764
2009	10.203788590279801
2010	10.103053954237767
2011	13.862109592121662
2012	12.80348988272898
2013	12.63909241000683
2014	12.384249823798651
2015	11.76972030491202
2016	12.087573410896377
2017	13.502165595807266
2018	12.572796347235894
2019	12.392711748947223
2020	13.943418907645716
2021	12.808979703101055