Year	% of lower secondary school age
1998	50.1186790466309
1999	47.2503318786621
2000	45.8571395874023
2001	43.44287109375
2005	37.1919212341309
2006	34.8927993774414
2008	27.1142902374268
2009	26.7739200592041
2010	22.3763904571533
2011	19.0614795684814
2012	15.0182695388794
2013	16.5908203125
2015	13.9563598632812
2016	14.9631099700928
2017	15.6293001174927
2018	15.7466602325439
2021	15.6230001449585
2022	14.9919996261597