Year	% of total secondary
1999	13.8353395462036
2000	9.06906032562256
2001	14.6480197906494
2002	15.2515096664429
2004	21.0290393829346
2005	23.3262596130371
2006	17.0791301727295
2007	15.8440999984741
2008	12.2038898468018
2009	11.0586500167847
2011	10.0009803771973
2012	10.4516897201538
2013	9.74368000030518
2014	8.86717987060547
2015	9.06814002990723
2016	9.22264003753662
2017	9.3200798034668
2018	10.5259103775024
2019	11.6169700622559
2020	12.3745803833008
2021	12.4378004074097
2022	13.5142402648926