Year	% of official school-age population
1998	49.2961
1999	49.3076
2000	50.40224
2001	51.17666
2002	54.79025
2003	55.5759
2004	56.02392
2005	57.79379
2006	60.30672
2007	63.07344
2008	65.53009
2009	65.50283
2010	64.93454
2011	68.21139
2012	68.39038
2013	68.50105
2014	68.91118
2015	68.63306
2016	68.66731
2017	68.19165
2018	67.90468