Year	% of total teachers
2006	58.2703590393066
2008	47.0461082458496
2009	48.1818199157715
2010	49.3166999816895
2011	45.549129486084
2012	47.144401550293
2013	46.6698799133301
2014	49.7222213745117
2015	51.7615203857422
2016	52.7801208496094
2017	100
2018	100
2019	100
2020	100
2022	100