Year	% of total teachers
2000	96.0515823364258
2001	95.9376220703125
2002	95.7338562011719
2003	96.4965972900391
2004	96.862060546875
2005	94.6681518554688
2006	92.9827423095703
2007	92.2973403930664
2008	92.3223114013672
2009	93.0370788574219
2010	93.1206512451172
2011	92.6914596557617
2012	90.7723388671875
2013	88.0897903442383
2014	88.7714309692383
2015	86.9477386474609
2016	85.8911895751953
2017	86.7092132568359
2018	86.9684677124023
2019	85.7865371704102
2020	84.9401626586914
2021	86.3175964355469
2022	86.2645416259766