Year	% of total expenditure in secondary public institutions
2013	92.2053833007812
2015	90.4228973388672
2016	89.6341781616211
2017	88.7717971801758
2018	88.7720031738281
2019	88.6741409301758
2020	88.2803497314453
2021	87.2659912109375