Year	% of total teachers
1999	99.9755477905273
2000	99.9332809448242
2001	99.9432373046875
2002	100
2003	99.6254577636719
2004	99.818962097168
2005	99.9763336181641
2006	99.9814071655273
2007	99.9977264404297
2008	99.9408721923828
2009	99.9163513183594
2010	99.979362487793
2011	99.9884414672852
2012	99.9927215576172
2013	99.5684204101562
2014	99.3514099121094
2015	99.2799377441406
2017	98.0378189086914
2018	99.5214309692383
2019	99.8314895629883
2020	99.8605575561523
2021	99.7094573974609
2022	99.7695693969727