Year	% of total teachers
1998	100
1999	100
2000	85.2532730102539
2001	89.7992630004883
2002	90.5823974609375
2004	89.6523818969727
2005	90.2838897705078
2006	100
2007	100
2008	96.4187316894531
2009	97.6171569824219
2010	94.0110321044922
2011	98.7058792114258
2012	99.9212875366211
2013	99.9562911987305
2014	100
2015	100
2016	100
2017	100
2018	100
2019	100
2020	100
2021	100