Year	% of official school-age population
1999	40.76889
2000	42.5355
2001	44.15778
2002	50.07242
2003	51.39761
2004	51.99434
2005	54.52345
2006	57.85301
2007	60.47555
2008	64.23156
2009	63.81189
2010	63.33044
2011	66.69018
2012	66.84813
2013	67.24519
2014	67.94344
2015	67.40706
2016	66.60146
2017	66.15789
2018	65.67715