Year	% of government expenditure on education
1971	19.88493
1972	21.16011
1973	22.04751
1975	21.62519
1977	30.39732
1978	46.64906
1981	43.01653
1982	39.31915
1983	38.01226
1984	37.32745
1985	43.05043
1986	36.56936
1987	38.75145
1988	37.95649
1989	40.01388
1990	40.98019
1991	35.28137
2001	40.6777
2002	38.30222
2003	39.79143
2004	40.23315
2005	44.18119
2006	46.08863
2008	48.64084
2009	47.93064
2010	52.64606
2011	48.71658
2012	53.75406
2013	54.47862
2014	61.62625
2015	64.14047
2016	63.72382
2017	63.08222
2018	62.72406