Year	% of total teachers
2002	97.5719375610352
2005	91.4606704711914
2006	90.68994140625
2007	86.6972503662109
2008	88.370246887207
2009	88.3424377441406
2010	89.0029296875
2011	90.5003204345703
2012	78.7519683837891
2013	81.8251037597656
2014	81.984733581543
2015	86.2650604248047
2016	86.11962890625
2017	86.2650604248047
2018	85.1301116943359
2019	84.3335876464844
2021	90.1666717529297