Year	% of total teachers
2005	84.4547119140625
2006	84.6049423217773
2007	82.8280029296875
2008	84.2837295532227
2009	84.14013671875
2010	87.0893173217773
2011	88.2672882080078
2012	88.0386276245117
2013	85.1905517578125
2014	87.4380035400391
2015	81.6760025024414
2016	84.9079971313477
2017	85.3470001220703
2018	86.4130020141602
2019	86.6470031738281
2020	85.1809997558594