Year	% of total secondary
2006	4.59019994735718
2008	5.74341011047363
2009	5.81860017776489
2010	6.14436006546021
2011	6.61479997634888
2012	7.25773000717163
2013	7.76117992401123
2014	8.26904964447021
2018	8.79378032684326
2019	9.4629602432251
2020	9.93015003204346
2021	10.173469543457
2022	10.8249597549438