Year	% of total teachers
1999	94.559700012207
2000	86.6410293579102
2001	94.4718322753906
2002	85.7786178588867
2003	83.9545822143555
2004	76.9643783569336
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