Year	% of official school-age population
1998	72.93955
1999	72.94475
2000	73.37889
2001	73.84274
2002	74.38221
2003	74.24281
2004	74.22904
2005	74.37812
2006	76.41456
2007	76.50289
2008	73.85285
2009	74.74399
2010	73.71236
2011	73.29329
2012	72.61395
2013	72.44698
2014	73.23721
2015	74.48002
2016	75.60344
2017	75.03878
2018	75.29185