The category CU is omitted, to avoid double-counting with the MPF of the currency union/area itself. Countries leaving the framework (by joining the Euro or any other currency union) are listed with a black dot in the final year of their previous framework. Countries using another sovereign's currency (UASC) are listed under UASC although they do not have a national monetary policy framework. Countries which do not or did not exist in the year concerned (X) are omitted.
GDP and population data from World Development Indicators, except for Czechoslovakia, USSR and Yugoslavia, where the data have been taken or constructed from the Maddison Historical Statistics, and the Yemen Arab Republic and Yemen PDR, for which an approximate split of the all-Yemen population data was constructed on the basis of data reported for various years in the Article IV reports (but no GDP data available). There are some gaps in the data, especially for GDP, for smaller countries, and in the earlier years.