I need annual, historic exchange rates of currencies worldwide. The PA.NUS.FCRF seems to be a great data set for that: it's open, spans almost all countries worldwide, and for many countries it dates back to 1960. But the data is not given in, for example, CHF to US Dollar, but in local currency unit (LCU) to US Dollar. My problem is I fail in finding out which currency the LCU corresponds to.
I'd expect that information to exist in the metadata. Unfortunately it does not seem to be systematically. For some countries, some information is available in the
Metadata Country table; for other countries (mostly European) some information can be found in the
Country-Series table; for most countries though, there is no information available.
How do I know which currencies the LCUs in the PA.NUS.FCRF dataset correspond to?