Year	% of total teachers
2003	79.0989685058594
2006	83.3624420166016
2007	84.5191192626953
2008	83.9459228515625
2009	83.7790679931641
2010	83.7567977905273
2011	83.8169937133789
2012	83.9690475463867
2013	80.6282272338867
2014	81.0476531982422
2015	81.6835784912109
2016	82.0464096069336
2017	82.0735015869141
2018	81.9402389526367
2019	82.7875289916992
2020	83.6889038085938
2021	84.4949798583984
2022	84.2676086425781