Historic exchange rates

Historical exchange rate data is from the University of Pennsylvania and is published in their Penn world table 6.3. The data mostly runs from 1950-2005. These are created for the purpose of calculating purchashing power parity, so they're not directly comparable to bank exchange rates, but they're very useful for looking at historical economic trends. For ease of comparison, all exchange rates are given in terms of the US dollar, and are expressed in the currency in use in each country in 2005.