Year	% of total teachers
2000	84.2452774047852
2001	86.3013534545898
2002	67.3691635131836
2003	70.0766906738281
2004	69.4704437255859
2005	69.8585968017578
2006	70.2435684204102
2007	70.5226898193359
2019	74.3971633911133
2020	74.7383117675781
2021	75.2367401123047
2022	75.9408111572266