Year	% of total teachers
1999	63.1578903198242
2003	71.7647094726562
2015	88.8446197509766
2016	67.8570022583008
2018	99.1967926025391
2019	67.9104537963867
2020	69.4656524658203
2021	67.96875
2022	47.5083084106445