Year	% of total teachers
1999	59.0596313476562
2000	60.5769195556641
2001	60.8523292541504
2002	61.6346206665039
2003	63.0769195556641
2004	63.2133483886719
2005	66.9894409179688
2006	68.977783203125
2007	72.3037109375
2008	72.5473327636719
2009	70.049919128418
2010	69.7617111206055
2011	70.8367233276367
2012	73.3160629272461
2013	75.2324600219727
2014	80
2015	87.2923583984375
2016	88.4962997436523
2017	90.3307876586914
2018	89.8305130004883
2019	91.3961029052734
2020	93.0232620239258
2021	93.6437530517578
2022	93.6996307373047