Year	% of total secondary
1998	12.7071104049683
2000	11.8134298324585
2001	11.9382295608521
2002	11.1709203720093
2003	10.4863796234131
2004	10.9031801223755
2005	11.2381496429443
2006	11.3411598205566
2007	12.5134000778198
2008	14.2471599578857
2009	14.4687404632568
2011	12.778790473938
2012	12.808910369873
2013	12.8829498291016
2014	13.0015497207642
2015	12.7659397125244
2016	12.1644697189331
2017	11.4233798980713
2018	11.5635499954224
2019	11.4788904190063
2020	11.4193496704102
2021	10.84547996521