Year	% of official school-age population
2007	64.458
2008	64.51935
2009	64.61104
2010	64.67229
2011	65.83759
2012	66.06433
2013	66.61645
2014	67.32257
2015	68.60429
2016	69.63852
2017	69.31329
2018	69.38553