What are the preconditions for cutting hands of a thief?

If someone is found to be guilty of theft, there applies Islamic law concerning theft; that is, the hand should be cut off from the wrist joint. > “[As for] the thief, the male and the female, amputate their hands in > recompense for what they earned [i.e. committed] as a deterrent > [punishment] from Allah. And Allah is Exalted in Might and Wise.” > [Quran 5:38] Now my questions are, - Does this apply to all cases of theft, or are there certain preconditions? - Which are the countries where this law is applicable? - Is there any record of how many people got this punishment? (country wise where this rule applies)