Year	% of government expenditure on education
1970	24
1972	19.33086
1973	23.87173
1974	19.13876
1975	30.72407
1976	27.49602
1977	20.04424
1978	21.70391
1979	22.8224
1980	21.78625
1982	15.92735
1983	18.63354
1984	18.44237
1985	34.95818
1986	33.23076
1987	48.66027
1989	47.7402
1990	47.34859
1996	20.89081
1998	21.15821
1999	17.14144
2000	18.13501
2001	17.13208
2002	17.49278
2003	16.18717
2004	17.20481
2005	16.24196
2006	17.75414
2007	17.7498
2008	17.66036
2009	18.85052
2010	19.85806
2011	19.43274
2012	19.94066
2013	20.23468
2014	20.40408
2015	20.5357
2016	20.36758
2017	22.08034