Year	% of total secondary
1999	16.5056190490723
2000	16.4567699432373
2002	16.2091293334961
2003	16.2730007171631
2004	16.5685997009277
2006	16.9868907928467
2007	17.0066890716553
2008	18.0810203552246
2010	18.5834503173828
2011	18.6833801269531
2012	18.9662303924561
2013	19.3371601104736
2014	19.2169895172119
2017	21.4708995819092
2018	21.5784091949463
2019	21.7271194458008
2020	21.8227806091309
2021	19.4902400970459
2022	19.4347591400146