Year	% of total teachers
1998	87.2340393066406
2013	99.552001953125
2014	97.0589981079102
2015	92.484001159668
2018	94.8779983520508
2019	92.8570022583008
2020	94.0950012207031
2021	97.5309982299805
2022	96.9059982299805