Year	% of official school-age population
1998	72.93555
1999	72.95815
2000	73.43462
2001	73.83803
2002	74.41696
2003	74.28571
2004	74.10119
2005	74.2896
2006	76.45252
2007	76.62106
2008	73.96262
2009	74.7667
2010	73.72865
2011	73.39164
2012	72.55836
2013	72.4716
2014	73.29116
2015	74.61136
2016	75.7466
2017	75.12245
2018	75.45358