Year	% of total secondary
1998	7.41792011260986
1999	7.55224990844727
2000	7.60759019851685
2001	7.62686014175415
2002	7.84155988693237
2003	7.95195007324219
2004	8.21265983581543
2005	8.54401016235352
2006	8.38533020019531
2007	8.60391998291016
2008	8.98466968536377
2009	9.3423900604248
2010	9.73233985900879
2011	9.77068996429443
2012	10.4285001754761
2013	13.4500503540039
2014	13.8916797637939
2015	14.0722904205322
2016	14.6080303192139
2017	14.7832698822021
2018	14.7874298095703
2019	14.858570098877
2020	14.70578956604
2021	14.7665596008301
2022	14.7306203842163