Where can I find real exchange rates for various currencies?
Euromonitor (source from International Monetary Fund) - back about 30 years - pick "countries and consumers" on the ribbon, then "economy, finance, trade" and select category called "exchange rate" then finally pick your nation.
Global Insight/Data Insight-Web (source from OECD) - back almost 30 years.
Bloomberg terminals in the Cutler Center have exchange rate data
Roubini Global Economics (formerly RGE Monitor) --from the ribbon at the top pick "Region" and then pick your nation; you should land on a "critical issues" page which has many subjects for your nation, for $$ see section on "monetary policy"