Year	% of primary school age children
1973	13.50351
1974	13.95717
1986	29.87419
1989	28.44083
1990	28.66782
1991	29.31646
1992	26.60499
1997	29.307
1998	29.43147
1999	31.25608
2000	31.90986
2001	36.20792
2002	40.54838
2003	44.60876
2004	48.65248
2005	48.1132
2006	49.33069
2007	50.25019
2010	61.33344
2011	66.15707
2012	66.76522
2013	66.16207
2014	65.80278
2015	67.60299
2016	68.63463
2017	71.33561