Year	% of lower secondary school age
1971	43.5796203613281
1972	40.3465614318848
1973	37.8163986206055
1974	33.4944496154785
1975	33.1658401489258
1976	29.5125007629395
1977	26.7278003692627
1978	26.4515991210938
1979	19.7527294158936
1980	16.2882995605469
1981	13.9862899780273
1984	17.3002300262451
1985	15.4376602172852
1986	12.9913301467896
1989	11.8509302139282
1991	5.98321008682251
1992	10.3183898925781
1996	0.885959982872009
1997	6.37408018112183
1998	4.77098989486694
1999	3.78662991523743
2000	1.01263999938965
2001	0.904209971427917
2002	1.38426995277405
2003	2.86026000976562
2004	2.71955990791321
2005	2.22102999687195
2006	1.27795994281769
2007	0.694180011749268
2008	2.39805006980896
2009	0.107299998402596
2010	0.149350002408028
2011	0.0107300002127886
2012	0.194619998335838
2013	0.0220500007271767
2014	0.0775199979543686
2015	2.62075996398926
2016	3.56742000579834
2017	3.50418996810913
2018	0.130659997463226
2019	0.343459993600845
2020	2.1316499710083
2021	1.08179998397827
2022	0.316370010375977