Year	% of government expenditure on education
1970	17.97129
1971	14.99937
1972	2.43939
1973	3.41027
1974	3.43244
1975	4.79732
1976	4.08021
1977	3.84161
1978	3.96516
1979	25.11416
1981	35.47603
1982	37.47231
1983	35.06809
1984	47.71208
1988	6.3796
1989	34.62713
1996	35.91859
1997	28.31836
1999	18.65662
2016	19.93532
2017	18.53475
2018	22.74788