Year	% of primary school age children
1970	57.66546
1971	57.37709
1972	59.40993
1973	62.52487
1974	63.02283
1975	65.06432
1976	66.01636
1977	67.16992
1978	66.85964
1979	67.12557
1981	70.68142
1982	69.98567
1983	67.77965
1984	68.1923
1985	69.24635
1986	68.64144
1987	69.11539
1988	69.32041
1989	68.43175
1990	70.5618
1991	71.27699
1992	72.98266
1993	72.95269
1994	74.58157
1995	77.60523
1996	77.24444
2009	82.48328
2010	88.47849
2011	92.46736
2012	90.05812
2013	85.44877
2014	86.05307
2015	84.8899
2016	85.02433
2017	82.71865