Year	% of government expenditure on education
1970	37.1029
1971	33.4065
1972	35.96479
1973	39.0564
1974	38.2051
1975	33.46256
1976	31.43769
1977	29.69773
1978	26.7104
1979	28.67521
1980	25.57702
1981	42.65317
1982	33.80402
1983	38.45457
1984	38.51073
1985	28.98803
1986	30.88208
1987	28.74985
1991	18.47208
1992	19.19752
1993	15.09519
1994	17.65791
1995	18.40878
2000	25.78828
2004	13.30184
2005	14.48865
2015	24.90163
2016	19.72515
2017	23.32998