Year	% of total expenditure in secondary public institutions
1998	84.9655914306641
1999	89.5527496337891
2000	82.7476196289062
2001	87.6924285888672
2002	93.7746124267578
2003	86.3323974609375
2004	84.7423095703125
2005	85.1567993164062
2015	94.6711578369141
2016	96.9227676391602
2017	97.6006774902344
2018	97.4535369873047
2019	97.2870101928711