In pictures: Four years of the Greek financial crisis

2010: Greek riot police rest in front of graffiti written on the wall of a bank during violent demonstrations over austerity measures.

2011: A protester clashes with a police officer after tens of thousands marched in opposition to government attempts to pass new austerity laws.

2011: A protester wears a gas mask beside a burning van during violent protests against austerity measures.

2011: Policemen are set ablaze by a petrol bomb thrown by protesters during clashes near the Parliament building in Athens.

2012: Greeks wait to receive free onions and other vegetables offered by farmers.

2014: Ilias Panagiotaros of the far-right Golden Dawn party delivers a speech during a pre-election rally in Athens.

2015: A man walks past a banner adversiting the opposition leader and head of the left-wing Syriza party, Alexis Tsipras.