Year	% of lower secondary school age
1970	48.9104995727539
1971	47.8446617126465
1972	43.6405410766602
1974	36.7734298706055
1975	37.770191192627
1976	38.558479309082
1977	38.1095504760742
2009	11.0846900939941
2010	10.4664602279663
2011	4.61010980606079
2012	2.74304008483887
2013	2.15672993659973
2014	0.954649984836578
2015	0.420450001955032