Year	% of primary school age children
1970	57.9649
1971	57.77068
1972	59.79657
1973	62.81896
1974	63.84233
1975	66.19718
1976	67.11695
1977	68.1626
1978	68.19032
1979	68.717
1980	70.26351
1981	72.37708
1982	71.49324
1983	69.97579
1984	69.97716
1985	71.29293
1986	70.4673
1987	71.17124
1988	70.90343
1989	70.43201
1990	72.41227
1991	72.87263
1992	74.33011
1993	74.13622
1994	76.18171
1995	79.10908
1996	78.57436
2009	82.0736
2010	87.86639
2011	89.41311
2012	88.33795
2013	84.57806
2014	85.37085
2015	84.30768
2016	84.37134
2017	82.59389