Year	% of total secondary
2000	1.5171400308609
2001	1.57783997058868
2002	1.65444004535675
2003	1.71679997444153
2004	1.52576994895935
2005	1.5963100194931
2006	1.72913002967834
2007	1.82244002819061
2008	1.9126900434494
2009	2.01753997802734
2010	2.10050010681152
2011	2.16891002655029
2012	2.19052004814148
2013	2.78729009628296
2014	2.93656992912292
2015	3.08801007270813
2016	3.84044003486633
2017	3.9086000919342
2018	4.14010000228882
2019	4.24565982818604
2020	4.20134019851685
2021	4.03752994537354
2022	3.93636989593506