Year	% of official school-age population
2006	63.32349
2007	64.18162
2008	64.22718
2009	64.30938
2010	64.3169
2011	65.3684
2012	65.58107
2013	66.11739
2014	66.78826
2015	67.99732
2016	69.02133
2017	68.76945
2018	68.81424