Year	% of lower secondary school age
1971	56.312801361084
1972	58.5061988830566
1973	45.3761901855469
1974	48.1458282470703
1975	50.079231262207
1976	51.7244987487793
1977	49.9937286376953
1978	48.7712898254395
1979	43.7418785095215
1980	40.6711311340332
1981	56.4131698608398
1984	37.625919342041
1985	34.5182418823242
1986	38.7802200317383
1989	16.455379486084
1990	17.942419052124
1991	10.4875602722168
1992	17.4124507904053
1993	15.6531400680542
1994	14.0626001358032
1995	9.84926986694336
1999	8.35478019714355
2000	11.1299695968628
2002	10.297739982605
2003	8.23972988128662
2013	11.5740003585815
2014	22.5090007781982
2021	13.9130001068115