Year	% of total teachers
2002	100
2003	100
2004	100
2005	100
2007	100
2008	100
2009	100
2010	100
2011	100
2012	100
2014	100
2017	93.1516036987305
2018	96.3172836303711
2019	95.5840530395508
2020	84.984977722168
2021	95.5585479736328