Year	% of lower secondary school age
1976	21.3429794311523
1977	20.9924602508545
1978	19.0653800964355
1979	19.2045307159424
1980	19.4079303741455
1981	20.7153606414795
1982	20.7404403686523
1983	18.7808704376221
1984	21.7768993377686
1985	20.0119590759277
1986	21.2538108825684
1987	19.7413291931152
1988	19.4360198974609
1989	21.1892890930176
1990	21.204610824585
1991	20.7747592926025
1992	20.9947490692139
1993	21.1099300384521
1994	21.662410736084
1995	21.0048408508301
1996	21.0224704742432
1997	21.1016101837158
1998	20.9914703369141
1999	20.1498794555664
2000	20.6822700500488
2001	20.4043598175049
2002	19.2825107574463
2003	19.5063705444336
2004	17.6197605133057
2005	17.0840606689453
2006	16.9501991271973
2007	16.9031391143799
2008	16.3743801116943
2009	16.4312000274658
2010	16.23547
2011	15.72288
2012	15.64198
2013	15.81836
2014	15.52727
2015	16.12712
2016	16.36302
2017	16.33287