Year	% of total teachers
2000	86.9736404418945
2001	86.927490234375
2002	68.598258972168
2003	69.9101867675781
2004	70.8912734985352
2005	71.0534515380859
2006	71.0565032958984
2007	71.6453094482422
2020	88.3905792236328
2021	88.8069305419922
2022	89.4804306030273