Year	% of total teachers
2000	95.869270324707
2001	95.7300720214844
2002	95.5027618408203
2003	96.2877883911133
2004	96.7167510986328
2005	94.8810806274414
2006	93.0627212524414
2007	92.2722930908203
2008	92.3964767456055
2009	91.7262420654297
2010	91.8748016357422
2011	91.4533615112305
2012	89.0010986328125
2013	85.2961120605469
2014	86.1769180297852
2015	84.1404113769531
2016	83.0342178344727
2017	84.1048278808594
2018	84.5406036376953
2019	83.1428375244141
2020	82.0719985961914
2021	84.0214080810547
2022	84.5629577636719