Year	% of official school-age population
2002	68.48696
2004	65.81045
2005	71.25251
2006	66.48437
2007	69.70497
2008	70.59394
2009	68.59971
2010	66.70788
2011	65.97835
2015	58.85862
2016	57.82515
2017	57.58225