Year	% of total teachers
2007	58.5714302062988
2008	64.0121002197266
2009	67.9660186767578
2010	67.5356597900391
2012	75.801887512207
2014	77.245231628418
2017	94.0730209350586
2018	95.80078125
2019	95.6064910888672
2020	96.2552719116211
2021	94.8646087646484