Year	% of total secondary
1998	33.3516006469727
1999	32.3592796325684
2000	30.0819702148438
2002	24.0709705352783
2004	22.3516006469727
2005	23.7628498077393
2006	23.701150894165
2007	24.0695095062256
2008	23.9930591583252
2009	22.189489364624
2010	21.0441207885742
2011	20.4392795562744
2012	20.213939666748
2013	20.9378204345703
2014	20.2797203063965
2015	21.1849994659424
2016	20.7480297088623
2017	20.6071796417236
2018	20.4407196044922
2019	20.46044921875
2020	20.6103706359863
2021	20.0521793365479
2022	20.8440208435059