Year	% of government expenditure on education
1971	26.58607
1972	28.15126
1973	29.60258
1974	23.43329
1980	16.35437
1989	24.60715
1990	32.81181
2004	8.92966
2005	12.85144
2006	14.45393
2007	17.25688
2008	17.02626
2009	16.66065
2010	11.32435
2014	18.26841