But the French bank's chairman Jean Lemierre said critics should remember that the economic climate may have been worse had central banks not come out with all guns blazing after the global financial crisis.
"Should we criticize what they have done till now? I do not believe so. I think they have done a proper job, and of course we welcome it...Because if we didn't have what they have done, the situation could be worse. We need to be much aware of this," he said in exclusive interview with CNBC aired on Tuesday.