Year	% of total teachers
2002	58.330680847168
2003	70.5780029296875
2004	57.867618560791
2005	64.3787612915039
2006	64.5355606079102
2007	64.2401275634766
2008	69.1924667358398
2009	64.1528701782227
2010	62.2846908569336
2011	61.459831237793
2012	82.3862075805664
2013	88.0315475463867
2014	92.1148834228516
2015	91.6662826538086
2016	91.6067886352539
2017	92.2017593383789
2018	92.9281921386719
2019	94.1324310302734
2020	94.2009811401367
2021	94.6409225463867
2022	95.046142578125