Year	% of official school-age population
1998	36.82356
1999	37.11291
2000	38.46029
2001	39.79701
2002	44.85358
2003	45.76196
2004	46.59814
2005	49.12958
2006	52.80302
2007	55.48556
2008	58.81278
2009	58.54504
2010	58.73272
2011	62.22157
2012	62.6124
2013	62.78132
2014	63.20282
2015	62.86464
2016	62.96619
2017	62.48044
2018	62.03726