Year	% of government expenditure on education
1977	14.78701
1978	12.46783
1979	14.75877
1980	13.53751
1981	10.4966
1987	16.37271
1988	15.74984
1989	16.49128
2000	34.65164
2007	25.41196
2008	25.40973
2010	22.74969
2011	18.43491
2012	13.26898
2013	14.0221
2015	20.85792
2018	19.82273