Year	% of total secondary
1999	60.7684288024902
2000	59.380298614502
2001	57.8381309509277
2002	57.4114990234375
2003	57.4914207458496
2004	57.7834281921387
2005	57.3110313415527
2006	57.1122894287109
2007	57.3059501647949
2008	57.5829391479492
2009	57.3763618469238
2010	57.6163482666016
2011	58.1063385009766
2012	57.9099197387695
2013	58.5228118896484
2014	58.7452201843262
2015	58.7452087402344
2016	58.2780799865723
2017	58.6954307556152
2018	58.764778137207
2019	58.3372383117676
2020	58.6761703491211
2021	59.8133087158203