Year	% of total secondary
1999	15.1084299087524
2000	15.96107006073
2001	16.3458309173584
2002	16.0361309051514
2003	15.5340700149536
2004	15.459059715271
2005	14.9676198959351
2006	14.9675798416138
2007	15.155369758606
2008	15.4945602416992
2009	13.753210067749
2010	13.6450996398926
2011	13.3478403091431
2012	13.431619644165
2013	13.0679903030396
2014	13.7899904251099
2015	13.1716203689575
2016	13.1766395568848
2017	13.1429195404053
2018	13.2743396759033
2019	12.7453899383545
2020	12.8899698257446
2021	11.5698795318604
2022	11.4588499069214