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In page Economic depression:

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Beginning in 2009, Greece sank into a recession that, after two years, became a depression. The country saw an almost 20% drop in economic output, and unemployment soared to near 25%.[1] Greece's high amounts of sovereign debt precipitated the crisis, and the poor performance of its economy after the introduction of severe austerity measures slowed the entire eurozone's recovery.[citation needed] Greece's troubles led to discussions about its departure from the eurozone.