Year	% of primary school age children
1978	79.68499
1980	76.15229
1981	73.20257
1982	78.237
1983	73.66271
1984	73.48471
1985	73.12173
1986	73.86725
1987	84.85019
1988	88.24281
1989	93.00106
1990	96.9068
1991	97.42814
1992	93.98811
1993	90.43338
1994	88.41546
1995	88.89034
1996	86.05468
1997	82.45285
1998	82.99068
2007	93.69753
2012	93.23711
2014	97.65242
2015	99.89207
2016	99.40189
2017	98.74312