Year	% of primary school age children
1973	10.60855
1974	11.13558
1977	15.12498
1978	16.14387
1981	19.20413
1986	23.33992
1989	22.57018
1990	22.9095
1991	23.5063
1992	21.42369
1997	24.02891
1998	24.37682
1999	26.1318
2000	26.89543
2001	30.5249
2002	34.11674
2003	37.82524
2004	41.31954
2005	41.3199
2006	42.64247
2007	43.81249
2010	55.14722
2011	59.88326
2012	61.1721
2013	60.83162
2014	60.86362
2015	62.49335
2016	63.57047
2017	66.48804