Year	% of lower secondary school age
1971	5.1910400390625
1972	4.02540016174316
1973	4.3993501663208
1974	4.4990701675415
1975	4.60238981246948
1976	4.21405982971191
1977	4.26883983612061
1978	4.23036003112793
1979	4.25822019577026
1980	4.24249982833862
1981	4.30672979354858
1982	4.37061977386475
1983	4.66931009292603
1984	4.79303979873657
1985	5.26707983016968
1986	5.45530986785889
1987	5.40654993057251
1988	5.40647983551025
1989	4.14177989959717
1990	4.54524993896484
1991	4.70468997955322
1992	12.9104099273682
1993	13.419469833374
1995	0.927009999752045
1996	1.11503005027771
1997	1.05009996891022
1999	0.517270028591156
2002	1.10246002674103
2003	0.035130001604557
2004	0.0978199988603592
2005	2.0777599811554
2006	0.193090006709099
2007	0.201020002365112
2008	0.151899993419647
2009	0.302940011024475
2010	0.258729994297028
2011	0.325280010700226
2012	0.254009991884232
2015	0.290529996156693
2016	0.309899985790253
2017	0.412680000066757
2018	0.427870005369186
2019	0.343529999256134
2020	0.400000005960464
2021	0.398310005664825