Year	% of total teachers
2012	86.2069396972656
2013	83.8651885986328
2014	85.5104675292969
2015	84.9371871948242
2016	82.9739532470703
2017	85.8251419067383
2018	88.0959167480469
2019	88.1123123168945
2020	87.2489929199219
2021	87.8948516845703
2022	89.4183197021484