Year % of lower secondary school age 2000 35.6276016235352 2001 33.5930480957031 2002 31.0687007904053 2003 28.5568008422852 2004 26.2250003814697 2005 24.6137008666992 2006 23.0198497772217 2007 22.0275993347168 2008 20.5941009521484 2009 19.4382991790771 2010 18.745849609375 2011 18.1625003814697 2012 17.6112003326416 2013 16.9594497680664 2014 16.6002006530762 2015 16.4841995239258 2016 16.4515495300293 2017 16.1137008666992 2018 15.8588495254517 2019 15.7610998153687 2020 15.756199836731 2021 15.4582500457764 2022 14.8786001205444 2023 14.0957498550415