Year	% of official school-age population
1999	76.42618
2000	76.14087
2001	79.12641
2002	91.71437
2003	86.7648
2004	87.81198
2005	86.94154
2006	84.92414
2007	88.30561
2008	88.0117
2009	88.04958
2010	90.21792
2011	89.16644
2013	87.89562
2014	86.83013
2015	86.62191
2016	87.1541
2017	86.53908
2018	87.46027