Year	% of total teachers
1998	75.7549209594727
1999	73.376708984375
2000	74.5617218017578
2001	74.9787826538086
2002	75.7915573120117
2003	76.9118804931641
2004	75.1657867431641
2005	75.3766326904297
2006	75.6040802001953
2007	75.8780822753906
2008	74.5744476318359
2009	74.3934478759766
2010	75.1154632568359
2011	76.4799194335938
2012	77.0069198608398
2013	75.7229232788086
2014	83.9924087524414
2015	83.9926681518555
2016	84.1132965087891
2017	83.1486434936523
2018	84.1760177612305
2019	84.9953918457031
2020	85.3995895385742
2021	83.4687271118164
2022	84.7149124145508