Year	% of total secondary
1999	0.853600025177002
2000	0.900499999523163
2001	0.902570009231567
2002	0.913370013237
2003	0.967050015926361
2009	7.53846979141235
2011	6.97504997253418
2012	8.99065971374512
2013	10.146710395813
2015	11.088529586792
2016	11.424690246582
2017	11.5096197128296
2018	13.0678901672363
2019	12.8767404556274
2020	12.6823596954346
2021	11.4898700714111
2022	11.2793102264404