Year	% of official school-age population
2005	64.18481
2006	64.69375
2007	65.64318
2008	65.65675
2009	65.49645
2010	65.51783
2011	66.34296
2012	66.46719
2013	66.90688
2014	67.75053
2015	68.79702
2016	69.63442
2017	69.46187
2018	69.47618