Year	% of total teachers
2012	88.4442520141602
2013	86.6119384765625
2014	86.3298873901367
2015	85.9246826171875
2016	84.8016510009766
2017	85.599006652832
2018	86.6845779418945
2019	86.2046585083008
2020	86.3962631225586
2021	86.606086730957
2022	85.6526412963867