Year	% of total teachers
2008	63.8704299926758
2010	72.3033905029297
2011	68.6869964599609
2013	66.7819976806641
2014	80.4120025634766
2015	85.6100006103516
2016	87.4769973754883
2017	88.0099487304688
2019	81.3051681518555
2020	81.0896072387695
2021	81.0899963378906
2023	90.5849990844727