Year	% of official school-age population
1998	72.48328
1999	72.48657
2000	72.89638
2001	73.43613
2002	73.91183
2003	73.85428
2004	73.86802
2005	73.96439
2006	75.95898
2007	76.05896
2008	73.33243
2009	74.25018
2010	73.19766
2011	72.77176
2012	72.29652
2013	72.00028
2014	72.66864
2015	73.92528
2016	75.08043
2017	74.55029
2018	74.76599