Year	% of total teachers
2012	86.1152114868164
2013	85.2701721191406
2014	86.8312225341797
2015	86.3047180175781
2016	84.8403396606445
2017	87.5155334472656
2018	89.2227325439453
2019	89.1362915039062
2020	88.0462493896484
2021	88.7750930786133
2022	90.3821487426758