Year	% of official school-age population
1998	72.46182
1999	72.4483
2000	72.88399
2001	73.45037
2002	73.96487
2003	73.87788
2004	73.96842
2005	74.07136
2006	76.11405
2007	76.17839
2008	73.37052
2009	74.35908
2010	73.27163
2011	72.78612
2012	72.25299
2013	71.96849
2014	72.64956
2015	73.9357
2016	75.14788
2017	74.61342
2018	74.81488