Year	% of primary school age children
1971	20.92524
1972	20.81935
1973	22.07092
1974	22.54759
1975	23.69834
1976	25.22417
1977	29.18221
1978	31.7409
1979	35.70421
1980	40.40406
1981	48.89858
1982	52.95195
1983	56.37778
1984	58.14528
1985	60.93532
1986	60.64459
1990	49.01772
1992	47.82232
1993	51.04922
1996	58.232
1998	58.89308
1999	67.98373
2000	64.5223
2001	64.28849
2002	62.1224
2003	65.33112
2004	65.77435
2005	63.87335
2006	68.63829
2007	70.6714
2008	66.6445
2010	67.89345
2011	67.30464
2012	70.27827
2013	70.03975
2014	69.82179
2015	75.91325
2016	77.65176
2017	80.15436
2018	81.80852