Year	% of lower secondary school age
1998	28.7905693054199
1999	28.8589096069336
2000	28.0977993011475
2001	27.5226593017578
2002	26.111909866333
2003	24.0692405700684
2004	23.0613098144531
2005	22.3771305084229
2006	21.9876098632813
2007	21.0719509124756
2008	20.6357002258301
2009	20.254940032959
2010	19.41974
2011	19.08842
2012	18.51632
2013	18.41178
2014	18.4651
2015	17.62372
2016	17.33696
2017	17.17115
2018	17.13199