Year	% of total teachers
2012	89.7969512939453
2013	92.2852401733398
2014	92.2957611083984
2015	92.7771224975586
2016	92.8738021850586
2017	92.1701278686523
2018	90.8620986938477
2019	89.9566802978516
2020	88.4093170166016
2021	87.049186706543
2022	84.3306121826172