Year	% of total secondary
2005	13.8469495773315
2006	13.978099822998
2007	15.3323602676392
2008	15.1933002471924
2009	15.7224903106689
2010	15.9163904190063
2011	16.4591999053955
2012	16.8814392089844
2013	16.2512893676758
2014	16.856990814209
2015	17.0768909454346
2016	17.5567893981934
2017	18.1770896911621
2018	19.2058906555176
2019	19.6106395721436
2020	19.9742393493652
2021	20.295259475708
2022	20.4273490905762