Year	% of official school-age population
1999	19.71465
2000	21.43813
2001	21.81568
2002	19.16113
2003	22.91003
2004	26.41864
2005	30.30641
2006	28.09383
2007	33.53752
2008	43.22088
2009	34.29058
2010	19.92227
2011	16.55693
2012	27.71162
2013	29.43959
2015	27.00688
2017	46.23179
2018	44.12488