Year	% of total teachers
2001	91.2580795288086
2002	100
2003	85.161003112793
2004	81.5605926513672
2005	73.5865936279297
2006	81.7661972045898
2007	82.1951675415039
2008	82.8061981201172
2009	83.1746673583984
2010	85.1899490356445
2011	86.8448486328125
2012	86.3026504516602
2013	90.2933731079102
2014	100
2015	100
2016	100