Year	% of total secondary
2002	1.35844004154205
2003	1.41219997406006
2004	1.50617003440857
2005	1.58061003684998
2006	1.69593000411987
2007	1.75899004936218
2008	1.81394004821777
2009	1.88501000404358
2010	1.94826996326447
2011	2.0163300037384
2012	2.03595995903015
2013	2.17529988288879
2014	2.40097999572754
2015	2.60264992713928
2016	3.47396993637085
2017	3.54824995994568
2018	3.79855990409851
2019	3.92207002639771
2020	3.81465005874634
2021	3.6121199131012
2022	3.49961996078491