Year	% of official school-age population
1998	14.87721
1999	18.7825
2000	22.48141
2001	25.68122
2002	25.06826
2004	44.65828
2005	46.16676
2006	51.5634
2007	56.25293
2008	58.62342
2009	60.93241
2010	64.04166
2011	63.94936
2012	65.50417
2013	73.3117
2014	77.18853
2015	77.01455