Year	% of total secondary
1999	16.3637199401855
2000	16.7517795562744
2001	15.9079504013062
2002	16.8194999694824
2003	16.9890804290771
2004	16.820499420166
2005	17.19873046875
2006	17.3511905670166
2007	18.0114994049072
2008	18.1191596984863
2009	19.4352397918701
2010	19.7733402252197
2011	20.1652793884277
2012	19.1957206726074
2013	19.4037704467773
2014	20.4090003967285
2015	20.6577606201172
2016	20.4625301361084
2017	21.060510635376
2018	21.4756107330322
2019	21.8384895324707
2020	22.3689708709717
2021	22.4473209381104
2022	22.6783409118652