Year	% of total teachers
2000	37.9928283691406
2001	38.2352905273438
2002	38.3977890014648
2003	35.9826583862305
2010	52.0656089782715
2011	53.7396087646484
2012	50.148509979248
2013	55.6680183410645
2015	62.8731307983398
2018	63.4106292724609
2019	68.7777099609375
2020	64.3853607177734
2021	65.1034469604492
2022	72.7762069702148