Year	% of total secondary
1998	27.0100498199463
1999	24.8119106292725
2000	25.0939807891846
2001	25.0535793304443
2002	24.9044208526611
2003	24.9429798126221
2004	25.4447002410889
2005	25.8993301391602
2006	26.1404991149902
2007	26.2289390563965
2008	26.3342094421387
2009	26.0257091522217
2010	25.3657398223877
2011	25.4569702148438
2012	26.105110168457
2013	26.2310695648193
2014	26.1535606384277
2015	26.5171394348145
2016	26.5493392944336
2017	26.8304004669189
2018	26.9850406646729
2019	26.4843502044678
2020	26.2319602966309
2021	25.4778003692627