Year	% of total expenditure in secondary public institutions
1998	88.7488403320312
1999	91.4280624389648
2000	92.0702667236328
2001	92.7447280883789
2002	92.6242828369141
2003	92.7660217285156
2004	92.9879531860352
2005	94.1093521118164
2006	93.9923095703125
2007	93.1122894287109
2008	92.3468704223633
2009	91.629768371582
2010	90.6695938110352
2011	90.2693634033203
2012	89.5201110839844
2013	90.7409133911133
2014	91.3836975097656
2015	91.4242095947266
2016	91.1247787475586
2017	90.617057800293
2018	89.4124526977539
2019	90.7870407104492
2020	91.171012878418