Year	% of government expenditure on education
1971	33.90883
1972	31.84993
1973	28.07564
1974	30.44824
1976	25.05487
1977	24.40537
1991	35.25243
1999	22.82903
2000	27.64804
2001	29.26084
2002	26.56135
2003	26.82197
2004	27.34454
2005	27.89376
2008	36.85655
2016	29.6064