Countries in international trade in services and balance of payments, v1:2017
services and the balance of payments are calculated on the basis of the UN's Nomenclature of Services EBOPS 2010 (Extended Balance of Payments Services Classification
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/lande-uht-bb?id=dda121e4-1da1-4b60-930e-c6fd02e4ab78