Year	% of primary school age children
1978	24.8883
1979	27.04413
1980	28.08905
1981	29.08685
1982	30.51298
1983	32.19517
1984	33.05545
1985	33.89343
1986	37.53358
1988	38.7848
1990	38.32991
1992	38.2571
1996	44.10598
1997	48.69991
1998	51.95599
1999	50.77453
2000	55.06712
2003	62.94346
2004	62.5563
2005	64.00654
2006	67.60955
2007	70.6294
2008	72.31399
2009	72.6207
2010	74.09407
2011	75.0892
2012	78.84001
2013	77.78702
2014	78.71067
2015	78.95308
2016	77.25883
2017	80.75965