Year	% of government expenditure on education
1971	36.06612
1972	35.35382
1973	37.25585
1974	42.38677
1975	31.87777
1976	35.44924
1977	32.16371
1978	36.85769
1979	41.34199
1980	42.83095
1983	35.8369
1984	36.7425
1985	37.36434
1986	40.6015
1987	48.59677
1988	53.16325
1990	52.82824
1992	51.65282
2005	39.61589
2007	44.22748
2009	32.69546