Year	% of primary school age children
1975	13.49708
1977	13.82605
1988	20.65163
1997	30.68962
1998	35.39829
1999	38.16043
2000	40.62253
2001	42.39191
2002	45.39328
2003	47.2464
2011	54.04668
2013	67.41198
2015	69.33838
2016	64.29745