Year	% of tax revenue
1990	31.42595391008689
1995	33.9398045098229
2001	30.278511200068138
2002	29.849307450804822
2003	29.30846147382573
2004	29.700338327694535
2005	27.74936061381074
2006	29.94854654998021
2007	32.679471461653726
2008	30.538698477045457
2009	30.82052630320992
2010	37.07563520202993
2011	30.49073897269429
2012	34.07122135116323
2013	33.487977633635026
2014	34.43852850221467
2015	14.540723185768856
2016	13.632149681211603
2017	13.544708994309332
2018	13.836908087277527
2019	13.096518405414132
2020	11.897447603419879
2021	13.336675438251982
2022	13.79777124552301