Year	% of official school-age population
1999	63.12292
2000	67.93213
2001	68.48865
2002	71.11182
2003	72.31029
2004	75.08999
2005	71.76335
2006	72.66776
2007	76.85185
2008	71.65168
2009	71.70854
2010	74.77714
2011	80.34188
2012	83.41207
2013	89.7929
2014	91.14779
2015	92.78945
2016	87.54273
2017	87.26182
2018	88.29156