Year	% of government expenditure on education
1971	26.85974
1972	26.12494
1973	22.8556
1974	30.26487
1975	29.82761
1976	30.3917
1977	33.0123
1978	24.41096
1979	33.79232
1980	32.65366
1981	32.98934
1982	32.47542
1983	35.69045
1984	32.43231
1985	36.89358
1986	37.48517
1987	36.8799
1989	33.83652
1990	30.18118
1991	29.76331
1992	29.04465
1993	28.03971
1994	29.29273
1995	28.47202
1996	29.3042
1997	27.33387
2013	25.13369
2014	33.37814
2015	37.38993