Year	% of tax revenue
1990	65.82365003417635
1991	62.172990808390296
1992	55.627344726969575
1993	55.92436974789916
1994	54.97430249632893
1995	51.37861466039004
1996	51.958394279213394
1997	52.49960502169342
1998	50.98562902546509
1999	50.21821399847213
2000	47.61676180140319
2001	50.15242043653213
2002	49.57308589331652
2003	51.19553343852409
2004	44.214495123353906
2005	47.19705871590221
2006	57.41531907600779
2007	42.069921558580674
2008	41.51705273553075
2009	51.820861716363495
2010	33.616291350226994
2011	28.410184450435455
2012	28.41093600745328
2013	28.455454281522393
2014	26.819348554664607
2015	20.47636830191404
2016	15.68963689605098
2017	15.538093493570829
2018	14.732136534046894
2019	12.937793184875776
2020	12.217610875534254
2021	11.935638796872428
2022	11.517693792886583