Year	% of government expenditure on education
1970	44.13668
1971	50.97189
1973	41.81298
1974	38.28731
1975	34.54997
1976	36.93075
1977	34.31244
1978	36.47113
1981	32.83719
1982	33.78674
1983	32.38255
1984	30.18893
1986	29.28746
1987	28.85988
1988	27.06487
1989	26.94675
1990	26.9871
1991	27.00601