Year	% of official school-age population
2006	65.13577
2007	65.9823
2008	65.9946
2009	65.87284
2010	66.20433
2011	67.17908
2012	67.29769
2013	67.72314
2014	68.62365
2015	69.71645
2016	70.58589
2017	70.26155
2018	70.31409