Year	% of official school-age population
1998	35.63917
1999	35.94592
2000	37.26127
2001	38.57729
2002	43.48698
2003	44.44022
2004	45.21916
2005	47.66936
2006	51.42526
2007	54.12635
2008	57.38293
2009	57.12675
2010	57.37034
2011	60.61218
2012	61.06821
2013	61.24095
2014	61.62436
2015	61.2745
2016	61.35145
2017	60.83853
2018	60.52348