Year	% of total teachers
2012	95.9728164672852
2013	96.6260986328125
2014	96.5050582885742
2015	94.7287902832031
2016	94.0641632080078
2017	92.5393218994141
2018	91.815299987793
2019	92.1203918457031
2020	90.4203872680664
2021	89.507698059082
2022	89.1333389282227