Year	% of total teachers
2011	92.2287368774414
2012	77.7822570800781
2013	87.3906707763672
2014	93.558723449707
2015	90.4898376464844
2017	94.2129135131836
2018	100
2019	95.3080825805664
2020	71.5036392211914
2021	68.5176391601562