Year	% of official school-age population
1999	23.37662
2000	26.51547
2001	37.72586
2002	40.60311
2003	44.95562
2004	42.30555
2005	44.52518
2006	40.72726
2008	28.27106
2009	27.53034
2010	28.32181
2011	32.85071
2012	29.98249
2013	32.33652
2015	29.14258
2016	25.50981
2017	25.37031
2018	27.08453