Year	% of total secondary
1998	18.2129993438721
1999	20.3515491485596
2000	18.123929977417
2001	18.0596809387207
2002	17.0503406524658
2003	17.0933399200439
2004	17.8975296020508
2005	18.513219833374
2006	18.6295795440674
2007	18.3432807922363
2008	19.0202102661133
2009	18.8548698425293
2010	18.8863105773926
2011	19.1394805908203
2012	19.5442409515381
2013	18.8627395629883
2014	19.167200088501
2015	19.295919418335
2016	19.1579208374023
2017	19.0560607910156
2018	19.0114498138428
2019	18.8581008911133
2020	18.736780166626
2021	18.0688495635986
2022	18.1645393371582