Year	% of primary school age children
1971	54.53103
1973	64.77191
1978	70.67829
1979	71.65629
1980	74.63192
1981	75.87662
1982	77.6257
1983	78.88
1984	81.55799
1985	83.88293
1986	86.26913
1987	90.31361
1988	90.36516
1989	90.98338
1990	90.57479
1996	92.60985
1997	92.0179
1998	93.29962
2013	71.45407