Year	% of total teachers
1999	94.263557434082
2000	87.9276580810547
2001	93.5265884399414
2002	82.0005874633789
2003	85.1577377319336
2004	80.2334213256836
2005	100
2006	100
2007	100
2008	100
2009	100
2010	100
2011	100
2012	100
2013	100
2014	100
2015	100
2016	100
2017	100
2018	100
2019	100
2020	100
2021	100
2022	100