Year	% of total teachers
2001	95.9141006469727
2002	96.0165863037109
2003	94.7456970214844
2004	96.5010223388672
2005	97.6862564086914
2006	98.3148498535156
2007	98.4139022827148
2008	98.2186889648438
2009	99.4791870117188
2010	99.0555419921875
2011	99.1060028076172
2012	100
2013	100
2014	100
2015	100
2016	100
2017	99.6969985961914
2018	99.2829971313477
2019	100
2020	100
2021	100
2022	100