Year	% of total teachers
2007	100
2008	100
2009	100
2010	100
2011	100
2012	100
2013	97.2832717895508
2014	98.2308807373047
2015	94.0251388549805
2016	94.8545532226562
2017	94.7218780517578
2019	97.4947891235352
2020	98.6505508422852
2021	98.0253219604492
2022	97.634147644043