Year	% of total teachers
1999	100
2000	100
2001	100
2002	100
2003	100
2004	100
2005	100
2006	99.4755172729492
2007	100
2008	99.4818725585938
2009	99.8281784057617
2010	100
2011	99.8344421386719
2012	99.5008316040039