Year	% of official school-age population
1998	66.74614
1999	66.56709
2000	67.15859
2001	68.22904
2002	71.2017
2003	71.47778
2004	71.57048
2005	71.67339
2006	71.60903
2007	71.9982
2008	71.63293
2009	71.76046
2010	73.61614
2011	74.28022
2012	74.86287
2013	75.12907
2014	75.70396