Year	% of official school-age population
1998	73.16476
1999	73.18112
2000	73.65658
2001	74.04355
2002	74.6427
2003	74.44939
2004	74.33907
2005	74.54292
2006	76.66501
2007	76.77704
2008	74.17191
2009	75.00728
2010	73.98245
2011	73.60563
2012	72.75303
2013	72.68706
2014	73.55316
2015	74.82042
2016	75.93805
2017	75.32965
2018	75.6403