Year	% of total teachers
1999	59.5178298950195
2000	52.4933090209961
2001	54.694278717041
2002	50.8444213867188
2003	54.2875785827637
2004	53.1813507080078
2005	50.4418487548828
2006	51.013599395752
2007	56.971378326416
2008	55.9832305908203
2009	54.3802680969238
2010	55.7107582092285
2011	55.1257019042969
2012	55.3939514160156
2013	55.8481216430664
2014	55.2120780944824
2015	57.407470703125
2016	55.9536285400391
2017	56.7114486694336
2018	57.0870895385742
2019	60.0209884643555
2020	61.9679489135742
2021	62.9483604431152