Year	% of official school-age population
1998	48.03038
1999	48.04963
2000	49.12927
2001	49.87259
2002	53.41898
2003	54.24174
2004	54.64265
2005	56.3937
2006	58.98054
2007	61.72483
2008	64.14779
2009	64.3405
2010	63.67795
2011	66.56299
2012	66.79951
2013	66.9247
2014	67.30693
2015	67.02088
2016	67.04288
2017	66.54718
2018	66.34925