Year	% of government expenditure on education
1970	41.95288
1971	40.8744
1972	40.76927
1974	31.23566
1975	23.51594
1977	20.01359
1983	27.17616
1984	24.13272
1987	18.4959
1988	21.18315
1990	20.74166
1992	11.59494
1993	10.82648
1994	23.13128
2006	27.74891
2007	31.8146
2009	31.5452