Year	% of lower secondary school age
1998	26.0406303405762
1999	26.2085494995117
2000	25.4702396392822
2001	24.9209594726563
2002	23.6867294311523
2003	21.6070308685303
2004	20.558500289917
2005	19.7871494293213
2006	19.4537105560303
2007	18.4442901611328
2008	18.0446300506592
2009	17.5818901062012
2010	16.77054
2011	16.33536
2012	15.74879
2013	15.12807
2014	14.96294
2015	13.84987
2016	13.3771
2017	13.36603
2018	13.17839