Year	% of total secondary
1998	19.4175395965576
1999	19.5075607299805
2000	19.3599605560303
2001	19.1588401794434
2002	19.0014991760254
2003	19.174259185791
2004	19.3950805664062
2005	19.8825702667236
2006	20.2519798278809
2007	21.0604591369629
2008	21.4800300598145
2009	22.00412940979
2010	22.6459903717041
2011	23.2910900115967
2012	23.9222202301025
2013	24.2915496826172
2014	25.7590408325195
2015	26.0094890594482
2016	26.5178298950195
2017	26.5359306335449
2018	26.9811191558838
2019	27.1786003112793
2020	27.2473907470703
2021	27.3326606750488
2022	27.2384490966797