Year	% of total expenditure in secondary public institutions
1999	88.8989486694336
2001	83.9871597290039
2002	85.0219802856445
2004	86.1723022460938
2007	90.7837677001953
2008	91.0827484130859
2011	92.943000793457
2013	95.9740295410156
2016	94.8752975463867
2018	96.9244079589844
2020	98.9282073974609
2021	98.8039169311523
2022	98.6036987304688