Year	% of government expenditure on education
1970	43.50496
1971	33.12303
1972	39.26534
1973	33.93214
1974	35.3594
1975	41.13771
1976	37.71763
1978	35.09984
1979	33.25728
1980	33.28746
1981	34.00161
1982	36.12573
1987	24.77159
1988	22.04017
1989	26.77518
1990	24.9065
1991	23.86065
1992	21.67381
1993	20.41837
2010	28.54099
2016	19.5228