Year % of total teachers 2013 98.0402221679688 2014 98.1411209106445 2015 97.9990692138672 2016 98.1569595336914 2017 98.5695114135742 2018 98.7177276611328 2019 98.7846374511719 2020 98.684211730957 2021 98.7525177001953 2022 98.4633178710938