Year	% of government expenditure on education
1971	65.51164
1972	66.19293
1973	66.62862
1975	60.82558
1977	48.25275
1978	37.73523
1981	42.02141
1982	45.74468
1983	47.68288
1984	47.41181
1985	44.3683
1986	48.86854
1987	47.05297
1988	47.00066
1989	45.50774
1990	43.40696
1991	36.14823
2001	33.17422
2002	30.528
2003	31.40319
2004	29.93843
2005	27.16528
2006	26.24491
2008	28.39471
2009	26.45663
2010	26.96169
2011	27.10349
2012	26.41398
2013	27.47102
2014	22.6824
2015	20.61997
2016	21.64483
2017	23.05301
2018	22.82639