Year	% of tax revenue
1994	7.571151358344114
1995	4.471932183487303
1996	4.1226937104080505
1997	3.5729353318732997
1998	2.718673523248932
1999	2.2854541087939797
2000	2.051186149818292
2001	2.012049991980192
2002	1.82024604015089
2003	1.9658883063489656
2004	0.615875782931695
2007	0.09274756392635994
2008	0.020867727218416104
2009	0.005976265002831707
2010	-0.008683608907862107
2011	-0.0317345149197655
2012	0.001447276041730819
2013	-0.0003451032721541921
2014	-0.004069967382898981
2015	-0.008586919018628958
2016	-0.1377476857529809
2017	-0.01987497852491727
2018	-0.00992083855032602
2019	0.002006498000153977
2020	-0.016400333876270705
2021	-0.016243938871919144