Year	% of central government expense
1990	24.78978564538337
1991	27.5808191639599
1992	39.660492468854315
1993	33.940555786363326
1994	90.65550113655345
1995	46.07994859758881
1998	43.61148119108536
1999	36.10732751471754
2012	15.528399781426542
2013	17.235187010717528
2014	18.29541323704469
2015	16.600116067255268
2016	18.802293810920776
2017	32.019539619819625
2018	25.657761278718915
2019	26.54316523490931
2020	28.482078156761876
2021	20.404355894428882