It was 2.6 points higher than Q3 2012 and 5.7 percent higher than Q4 2011.
The figure ticked an astonishing 57.8 percent among Greek youth.
Negotiations between Greek leaders and the EU-IMF-ECB "troika" have ground to a halt as lingering disagreements over federal job cuts, VAT levels and property taxes put off a scheduled meeting for the second consecutive week, according to I Kathimerini.