European Central Bank (ECB) President Mario Draghi listens during the monthly ECB news conference in Frankfurt April 4, 2013. The European Central Bank held its main interest rate at a record low of 0.75 percent on Thursday, as it waits to see whether the economy stabilises or a recent slew of weak economic data is a start of another downturn. REUTERS/Lisi Niesner (GERMANY - Tags: BUSINESS)