Year	% of total expenditure in secondary public institutions
2007	93.161376953125
2008	93.1453628540039
2009	93.3588485717773
2010	92.3069610595703
2011	91.2908401489258
2012	92.560791015625
2013	92.3580703735352
2014	92.422492980957
2015	92.7748184204102