Year	% of total secondary
1998	16.0417499542236
1999	16.3401508331299
2000	17.0432796478271
2001	17.7910194396973
2002	17.553560256958
2003	17.6875400543213
2004	17.6954307556152
2005	18.1068000793457
2006	18.3520908355713
2007	19.9790706634521
2008	20.2448501586914
2009	23.1810493469238
2010	23.7949695587158
2011	25.0139598846436
2012	22.9483299255371
2013	22.9951705932617
2014	25.35791015625
2015	25.5665607452393
2016	24.4705791473389
2017	25.6443691253662
2018	26.5259094238281
2019	27.5396404266357
2020	28.6212692260742
2021	28.8327007293701
2022	29.4856796264648