Turnout in Sunday’s referendum in Greece was “over 50%,” well above the minimum threshold 40% needed to make the vote valid,Interior Minister Nikos Voutsis said on Sunday. Many voters in Greece were driving from big cities to their home towns where they are registered in order to cast their ballots. Airlines had offered additional flights in the run-up to the vote this week to bring expat Greeks back to their country for the referendum. The government asked Greeks the following complex question: "Should the proposal that was submitted by the European Commission, the European Central Bank, and the International Monetary Fund at the Eurogroup of 25 June 2015, which consists of two parts that together constitute their comprehensive proposal, be accepted?" The referendum was held at the end of a turbulent week that has been perhaps the most difficult for Greece since its debt crisis began in 2009. Banks have been shut since Monday, ATMs dispensed up to EUR 60 per customer and businesses put deals on hold amid widespread uncertainty.