Year	% of official school-age population
1997	45.35296
1998	45.30854
1999	46.21885
2000	49.62842
2001	49.64434
2002	49.89072
2003	50.89179
2004	51.56837
2005	52.52171
2006	53.19313
2007	53.58443
2008	53.58212
2010	56.12982
2011	55.7376
2012	54.28504
2013	54.78061
2014	54.05767
2015	54.52818
2016	54.33896
2017	54.94224