Year	% of total teachers
2000	95.898323059082
2001	95.7586517333984
2002	95.5405426025391
2003	96.3162231445312
2004	96.7458801269531
2005	94.9310836791992
2006	93.1128234863281
2007	92.3324813842773
2008	92.4586029052734
2009	91.7973022460938
2010	91.9464263916016
2011	91.5358810424805
2012	89.1124801635742
2013	85.4456481933594
2014	86.315803527832
2015	84.2958297729492
2016	83.2009811401367
2017	84.2606887817383
2018	84.692756652832
2019	83.3163986206055
2020	82.2770233154297
2021	84.2038192749023
2022	84.748893737793