Year % of total teachers 2014 84.526237487793 2015 84.1535797119141 2016 82.8029022216797 2017 83.7583770751953 2018 85.0889663696289 2019 84.5495681762695 2020 85.2015686035156 2021 85.9197463989258 2022 85.3864288330078