Year	% of primary school age children
1977	50.85929
1991	49.10346
1992	49.3883
1996	54.68437
1997	55.69958
1999	57.5195
2000	56.50839
2001	60.60849
2002	60.66286
2003	56.0829
2009	55.83834
2013	68.27574
2014	72.85662
2015	76.73595
2016	86.90249
2017	88.60837
2018	93.69235