Year	% of total secondary
2005	24.6114501953125
2007	28.0209999084473
2008	23.6577606201172
2009	27.3667106628418
2010	24.1904392242432
2011	25.3225994110107
2012	25.8566093444824
2013	27.2657299041748
2014	27.2674503326416
2015	27.571460723877
2016	27.6070003509521
2017	27.8750095367432
2018	28.2728404998779