Year	% of tax revenue
1990	1.4354066985645932
1991	1.791185481970304
2000	1.5189092608245474
2001	1.633947079624436
2002	1.639089917219703
2003	1.4322126471659182
2004	1.546330773294228
2005	1.5716800774150528
2006	1.1660951028552542
2007	1.1659673184244062
2008	1.1502513921600133
2009	1.1347276520085436
2010	1.4412735539323456
2011	1.095139841804193
2012	1.2948145907442077
2013	1.280299510372444
2014	0.8715456380675887
2015	0.6327292941552126
2016	0.7664912282679452
2017	0.5104128295824706
2018	0.994947904693317
2019	0.5938059706244332
2020	2.858153830015846
2021	5.94875891832898
2022	8.221619942516915