Year	% of government expenditure on education
1970	15.39659
1971	19.72222
1973	25.65756
1974	26.74787
1975	24.87307
1976	27.12847
1977	25.57905
1978	23.10657
1981	23.65537
1982	23.02298
1983	18.58294
1984	24.3268
1986	23.93714
1987	23.69923
1988	24.01699
1989	24.87225
1990	24.23389
1991	23.92152
1998	30.97601
1999	29.11155
2000	24.03279
2001	30.52848
2002	32.42395
2003	30.93179
2004	34.64413
2005	36.0952