Year	% of lower secondary school age
1998	26.0463199615479
1999	26.1339092254639
2000	25.4016494750977
2001	24.8824806213379
2002	23.6409492492676
2003	21.7507591247559
2004	20.8682804107666
2005	20.1717891693115
2006	19.772970199585
2007	18.9868392944336
2008	18.6278495788574
2009	18.2360801696777
2010	17.54285
2011	17.28884
2012	16.82221
2013	16.73903
2014	16.79649
2015	15.98394
2016	15.73936
2017	15.59048
2018	15.55311