Year	% of tax revenue
2005	9.066839745613061
2006	8.91398569327196
2007	7.174864714211228
2008	8.164832019153199
2009	7.362403728369683
2010	6.388892655214025
2011	4.789000126726651
2012	5.308221413002336
2013	5.149765190308007
2014	4.694257406585878
2015	4.4225811002725175
2016	4.519518209772905
2017	4.659113621424912
2018	4.616335617227174
2019	4.984019930555308
2020	6.178281087399186
2021	6.658674365758902