Year	% of total secondary
1998	14.2724895477295
1999	14.2199897766113
2000	14.2651500701904
2001	14.4224100112915
2002	14.4375696182251
2003	14.5628204345703
2004	14.5776500701904
2005	14.7305603027344
2006	14.9497299194336
2007	15.2193899154663
2008	15.4725198745728
2009	15.7434396743774
2010	16.0350799560547
2011	16.1901607513428
2012	16.079870223999
2013	16.3013801574707
2014	16.3865394592285
2015	16.6002101898193
2016	16.6997890472412
2017	16.8635292053223
2018	16.9219398498535
2019	17.0379390716553
2020	17.1570796966553
2021	17.5075798034668
2022	17.5536499023438