Year	% of tax revenue
1996	12.471526195899772
1997	11.720321931589538
1998	8.162576233988226
1999	11.13525270826256
2000	7.38898355540044
2001	5.089172811142869
2002	5.486172392647213
2003	6.039358308548181
2004	5.376747026411848
2005	4.2001166354398025
2006	3.0920448529690074
2007	2.5472540722704275
2008	2.334154367530094
2009	1.9851507614999993
2010	1.795446209432203
2011	1.5020202394632465
2012	1.504850207395
2013	1.6183163815579389
2014	1.6258285608912133
2015	1.6513439836558046
2016	1.715570342104284
2017	1.5668728010359085
2018	1.6641454630765613
2019	1.5133820243223413
2020	1.5194500540249642
2021	1.522710202326127
2022	1.5289919287236844