Year	% of total expenditure in secondary public institutions
1999	92.5283889770508
2000	95.0516815185547
2002	87.6701965332031
2003	87.6701965332031
2004	84.5467376708984
2005	94.8582077026367
2006	93.1058120727539
2011	96.5158309936523
2013	97.7415008544922
2014	97.5754470825195
2015	98.2314529418945
2016	97.5352935791016
2017	98.2725830078125
2018	97.9678115844727
2019	98.0378265380859
2020	98.2496185302734
2021	97.2190399169922