Year	% of official school-age population
1998	72.70502
1999	72.71832
2000	73.16015
2001	73.63295
2002	74.15938
2003	74.06596
2004	73.98245
2005	74.12368
2006	76.20136
2007	76.33567
2008	73.64104
2009	74.5032
2010	73.45757
2011	73.07482
2012	72.4244
2013	72.23006
2014	72.9729
2015	74.26172
2016	75.40687
2017	74.83042
2018	75.10223