Year	% of total teachers
2012	83.9441070556641
2013	82.4942626953125
2014	84.2937469482422
2015	83.7716522216797
2016	82.2811508178711
2017	85.5873031616211
2018	87.5432510375977
2019	87.5465698242188
2020	86.1035079956055
2021	87.176628112793
2022	89.4914321899414