Year	% of tax revenue
1990	45.629935391242
1991	30.19626769626771
1992	26.378308942864887
1993	23.735409408535812
1994	38.58289510102408
1995	32.83887468030691
1996	30.195111336766516
1997	32.4822695035461
1998	35.86360200285909
1999	28.611266034578918
2000	23.430272426481114
2001	34.37193589905088
2002	30.32031494406125
2003	33.07086377501684
2004	35.68727171441518
2005	32.888572483085014
2006	33.33581186643963
2007	38.13101302034242
2008	36.292984062159036
2009	35.92385308579388
2010	34.47419394385191
2012	19.456687408681734
2013	19.59739369918872
2014	20.272696242736593
2015	17.59926133085086
2016	14.203379590175306
2017	11.298896725783345
2018	10.346455004730917
2019	12.542505587728616
2020	10.297513562787728
2021	8.356731871294896
2022	9.623392383273146