Year	% of official school-age population
1999	52.01761
2000	62.30793
2001	70.87273
2002	79.80148
2003	82.42105
2004	83.58337
2005	86.12091
2006	85.64163
2007	86.39249
2008	74.95413
2010	73.28739
2011	73.8718
2013	72.87699
2014	73.58535
2016	77.7026
2017	80.52599
2018	80.09457