Year	% of government expenditure on education
1970	30.28571
1972	31.97026
1973	33.01663
1974	23.76396
1975	30.86385
1976	36.55797
1977	29.68849
1978	26.65889
1979	28.08603
1980	26.62529
1982	26.16797
1983	27.6454
1984	26.94889
1985	37.82183
1986	43.64731
1987	42.37857
1989	45.12031
1990	43.72448
1996	33.63842
1998	33.21242
1999	36.90678
2000	35.70325
2001	36.62538
2002	39.24177
2003	37.2599
2004	37.79909
2005	41.68709
2006	40.02116
2007	39.24554
2008	39.19364
2009	40.77314
2010	39.64997
2011	40.47189
2012	40.43839
2013	41.52728
2014	41.47732
2015	41.33272
2016	40.93612
2017	39.5394