Year	% of lower secondary school age
1971	31.7215690612793
1972	34.5603790283203
1973	37.661060333252
1978	21.3873805999756
1979	19.1075706481934
1980	15.5909900665283
1992	46.9526901245117
1994	23.4823799133301
1997	0.440450012683868
1999	17.0489597320557
2000	12.4987697601318
2001	8.48793029785156
2003	4.32884979248047
2004	2.19295001029968
2007	1.66933000087738
2010	2.48834991455078
2011	4.26695013046265
2012	6.52349996566772
2013	9.56455039978027
2014	11.2888298034668
2015	9.26576042175293