Year	% of lower secondary school age
1971	34.9185485839844
1972	39.0658416748047
1973	40.4613494873047
1974	44.3991317749023
1976	41.2688789367676
1977	43.9504585266113
1978	44.0769386291504
1979	37.2984809875488
1980	31.3889904022217
1981	30.5836791992188
1983	19.9845409393311
1984	17.0205402374268
1985	14.9187498092651
1986	11.1311702728271
1987	18.7300605773926
1988	18.4884395599365
1990	13.9630298614502
1991	14.5334396362305
1992	12.9218301773071
1993	6.11559009552002
1994	5.4316201210022
1998	11.1930103302002
1999	7.16030979156494
2001	12.7719898223877
2002	13.8650102615356
2004	9.23733997344971
2005	9.95919990539551
2006	10.2113800048828
2007	8.8125696182251
2009	4.23362016677856
2010	1.22183001041412
2011	4.57577991485596
2012	4.87401008605957
2013	2.60244989395142
2014	7.10985994338989
2015	6.74682998657227
2016	5.77340984344482
2017	1.49567997455597
2018	1.80693995952606
2019	1.54709005355835
2020	2.16364002227783