Year	% of total secondary
2005	12.5030097961426
2006	12.6706104278564
2007	14.185640335083
2008	14.0305099487305
2009	14.5997800827026
2010	14.8304395675659
2011	15.464599609375
2012	15.9345302581787
2013	15.25465965271
2014	15.9074602127075
2015	16.1449394226074
2016	16.6828002929688
2017	17.3811206817627
2018	18.3762798309326
2019	18.8933200836182
2020	19.3204498291016
2021	19.6877002716064
2022	19.8324394226074