Year	% of total teachers
2000	28.1818199157715
2001	34.5744705200195
2002	40.4255294799805
2003	40.5275802612305
2004	35.391918182373
2005	39.0428199768066
2007	39.8210296630859
2008	35.7314109802246
2009	49.8866195678711
2010	47.0967712402344
2011	55.5555610656738
2012	53.125
2014	50.6796112060547
2015	59.7302513122559
2016	61.6698303222656