Year % of total teachers 2014 85.0244598388672 2015 85.1082763671875 2016 84.4002075195312 2017 86.2603530883789 2018 88.3026275634766 2019 88.1912689208984 2020 86.698486328125 2021 87.881462097168 2022 89.9991607666016