FRANKFURT AM MAIN, GERMANY – JUNE 05: Mario Draghi, president of the European Central Bank (ECB), speaks during a news conference at the bank’s headquarters on June 5, 2014 in Frankfurt am Main, Germany. The European Central Bank has lowered its benchmark interest rate to 0.15% and has also reduced its deposit rate below zero, to -0.1%. (Photo by Thomas Lohnes/Getty Images)