Year % of lower secondary school age 1972 17.6406307220459 1973 18.3904399871826 1974 17.661039352417 1975 17.6386299133301 1976 16.5810508728027 1977 12.83314037323 1978 13.4715995788574 1982 13.4082899093628 1983 14.4295997619629 1984 13.5032196044922 1986 15.4985799789429 1987 12.6279001235962 1988 26.2255897521973 1999 4.82956981658936 2000 3.95410990715027 2001 15.3652601242065 2002 15.4153203964233 2003 15.8431596755981 2004 15.5894899368286 2005 6.29231023788452 2006 5.53914022445679 2007 5.95795011520386 2008 5.4824800491333 2010 3.79815006256104 2011 2.34809994697571 2012 1.81262004375458 2013 3.93493008613586 2014 3.28783988952637 2015 4.23313999176025 2016 3.16200995445251 2017 4.29525995254517 2018 3.88095998764038 2019 3.87142992019653 2020 4.42357015609741 2021 3.94481992721558