Year	% of official school-age population
1998	72.7231
1999	72.71645
2000	73.11215
2001	73.65017
2002	74.132
2003	74.04396
2004	74.12302
2005	74.21997
2006	76.17292
2007	76.23693
2008	73.54671
2009	74.49121
2010	73.45343
2011	72.99458
2012	72.48116
2013	72.21867
2014	72.93523
2015	74.15238
2016	75.28193
2017	74.75977
2018	74.95841