Year	% of total teachers
2012	89.631591796875
2013	90.3230819702148
2014	92.0215301513672
2015	92.5344009399414
2016	92.557487487793
2017	91.4415435791016
2018	90.3254318237305
2019	88.9443511962891
2020	87.7247314453125