Year	% of official school-age population
2003	62.54856
2004	62.65166
2005	63.07273
2006	63.49305
2007	64.57761
2008	64.50194
2009	64.46585
2010	64.35932
2011	65.39948
2012	65.37287
2013	65.87401
2014	66.54923
2015	68.35112
2016	69.15707
2017	68.62672
2018	68.56572