Year	% of official school-age population
2002	71.82161
2004	67.45227
2005	71.94739
2006	67.03554
2007	73.75728
2008	74.85434
2009	73.31246
2010	71.69606
2011	70.84699
2015	61.42631
2016	60.63993
2017	59.98604