Year	% of total teachers
2007	99.4870223999023
2008	98.968147277832
2009	99.2689514160156
2016	98.9989624023438
2017	99.0019378662109
2018	98.2977294921875
2019	97.8713073730469
2020	98.1781463623047
2021	98.0792007446289