Year	% of official school-age population
2003	62.46565
2004	62.51473
2005	62.99055
2006	63.44399
2007	64.51212
2008	64.35493
2009	64.30959
2010	64.10978
2011	65.01199
2012	64.96866
2013	65.44831
2014	66.11065
2015	67.86698
2016	68.61733
2017	68.26421
2018	68.09851