Does "central bank" take capital letters??

Say I am writing about the ECB and I say “Trichet emphasised the primacy of the central bank’s price stability mandate”… Should that be a capital “c” and “b”? In the interests of clarity, could you please distinguish between fact and opinion?? i.e. if you KNOW or if you think you know. Cheers Etienne

“central bank” is not a proper noun, so it’s not capitalized any more than “federal government” would be. (In the USA, the CB is the Federal Reserve, which is capitalized. In Eurozone, European Central Bank is capitalized.)