Year	% of lower secondary school age
1998	34.4171104431152
1999	34.4859886169434
2000	33.5168495178223
2001	32.6863899230957
2002	31.6779708862305
2003	29.0370597839355
2004	27.5411491394043
2005	26.5663204193115
2006	25.3037605285645
2007	23.2398490905762
2008	22.7720108032227
2009	22.3273906707764
2010	20.93461
2011	20.20028
2012	18.8042
2013	18.49376
2014	18.21172
2015	16.4375
2016	16.14032
2017	16.07938
2018	15.9173