If Europe were a country, how would it score on the CDI? To answer this question, we have calculated an aggregate score for Europe. It is calculated by computing a European score for each indicator, then combining indicators in the same way as for other countries. Most of these scores are natural to compute. For example, immigrant flow as a share of receiving population for Europe is the sum of the immigrant flows for individual European nations in the CDI divided by total population of the same. For indicators where aggregation is less natural, such as point scores on investment component indicators, averages are taken, usually weighting by GDP in purchasing power parity terms.
