Year	% of primary school age children
1978	13.23909
1979	15.59164
1998	50.22886
1999	51.54562
2000	54.78779
2001	57.79673
2005	70.34667
2006	74.82616
2008	81.56659
2009	86.52828
2010	89.16829
2011	90.50276
2012	92.8337
2013	92.17162
2015	91.41402
2016	90.67862
2017	90.30842
2018	90.79405