Year	% of official school-age population
1998	34.6882
1999	34.83721
2000	36.13919
2001	37.25272
2002	41.54399
2003	42.68286
2004	44.00695
2005	46.04938
2006	49.09942
2007	51.42635
2008	54.05669
2009	53.65077
2010	53.84882
2011	56.04068
2012	56.27337
2013	56.47309
2014	56.62175
2015	56.2553
2016	56.2428
2017	55.78767
2018	55.57376