Year	% of government expenditure on education
1971	23.06025
1972	22.87732
1973	25.36238
1974	27.3896
1975	29.21649
1976	29.7052
1977	29.49046
1978	29.61881
1980	32.51751
1981	35.95637
1982	50.37701
1983	37.59399
1984	38.875
1985	40.34155
1990	40.00907
1992	37.35679
1996	34.99181
2002	31.8486
2003	32.14857
2004	32.49201
2005	33.81572
2006	33.14844
2007	34.0201
2008	34.05481
2009	26.87913
2010	35.53743
2011	35.14551
2012	33.57882
2013	30.48825
2014	31.31349
2015	33.91297
2016	33.04545
2017	32.65564
2018	31.31521