Year	% of official school-age population
1999	23.03844
2000	25.08872
2001	25.4161
2002	22.12301
2003	26.2747
2004	28.53264
2005	33.16434
2006	30.70842
2007	36.07053
2008	45.28868
2009	35.35659
2010	20.23436
2011	16.97822
2012	28.30942
2013	30.06558
2015	27.56022
2017	47.14144
2018	45.1496