Year	% of total teachers
2010	81.5487289428711
2011	83.6969299316406
2012	84.6553115844727
2013	86.7006072998047
2014	86.8741989135742
2015	87.5100479125977
2016	88.4466705322266
2017	88.6741104125977
2019	83.3870697021484
2020	82.3879013061523
2021	82.3880004882812