Year	% of total teachers
2013	79.4634780883789
2014	79.2247085571289
2015	78.7237167358398
2016	76.484733581543
2017	78.3602981567383
2018	80.6588973999023
2019	78.9998321533203
2020	80.0864181518555
2021	84.1339721679688
2022	83.6936187744141