A trader arranges a crate of clementines in the wholesale food market in Frankfurt, Germany, on Friday, Oct. 23, 2015. Falling prices and potentially weakening growth in the euro area are raising the prospect of more stimulus by the European Central Bank, according to Markit Economics. Photographer: Martin Leissl/Bloomberg via Getty Images

A trader arranges a crate of clementines in the wholesale food market in Frankfurt, Germany, on Friday, Oct. 23, 2015. Falling prices and potentially weakening growth in the euro area are raising the prospect of more stimulus by the European Central Bank, according to Markit Economics. Photographer: Martin Leissl/Bloomberg via Getty Images