Year	% of official school-age population
1998	50.53858
1999	50.53965
2000	51.64745
2001	52.45255
2002	56.13027
2003	56.8798
2004	57.37316
2005	59.16094
2006	61.60163
2007	64.38984
2008	66.87998
2009	66.63869
2010	66.16284
2011	69.82146
2012	69.94399
2013	70.03992
2014	70.47654
2015	70.20511
2016	70.2513
2017	69.79541
2018	69.42195