Year	% of total teachers
2006	73.2325134277344
2007	84.9038772583008
2008	84.4859466552734
2009	85.7253723144531
2010	86.4645309448242
2011	87.3024520874023
2012	84.4956817626953
2013	79.2448425292969
2014	79.6409301757812
2015	80.8475189208984
2016	80.5932235717773
2017	80.3090972900391
2018	79.982780456543
2019	81.0270614624023
2020	82.0429306030273
2021	82.4483871459961
2022	80.712646484375