Year	% of total teachers
2005	63.2947998046875
2007	49.6913604736328
2008	48.4848518371582
2009	49.7237586975098
2010	52.3676910400391
2011	46.5517196655273
2014	57.1430015563965
2015	57.7656707763672
2016	62.4657516479492
2017	72.6224822998047
2018	72.0588226318359
2019	71.5517196655273
2020	70.7317123413086
2021	69.6883926391602
2022	69.9724502563477