Year	% of total expenditure in secondary public institutions
1998	93.8951416015625
1999	94.3512802124023
2000	94.9424667358398
2001	97.0620269775391
2002	96.3520431518555
2003	97.2206573486328
2004	96.6106567382812
2005	97.3278121948242
2006	97.6040267944336
2007	98.2101516723633
2008	98.1171798706055
2009	98.1354370117188
2010	98.1357269287109
2011	98.0755233764648
2012	97.9999237060547
2013	98.0293273925781
2014	97.4952087402344
2015	97.5038070678711
2016	97.3751907348633
2017	96.6040878295898
2018	96.7398681640625
2019	96.8953170776367
2020	96.5994033813477