Year	% of official school-age population
1998	37.99749
1999	38.26557
2000	39.64237
2001	40.99969
2002	46.19847
2003	47.06286
2004	47.954
2005	50.56404
2006	54.15615
2007	56.81956
2008	60.21575
2009	59.93663
2010	60.06972
2011	63.8
2012	64.12668
2013	64.29133
2014	64.74916
2015	64.42102
2016	64.54637
2017	64.08729
2018	63.51913