Year	% of official school-age population
2007	64.48842
2008	64.5577
2009	64.65664
2010	64.71251
2011	65.87215
2012	66.09266
2013	66.64184
2014	67.34245
2015	68.61828
2016	69.65621
2017	69.33095
2018	69.4042