English: London boroughs (and the City of London) grouped so as to ascribe to "residents" for more than 6 months of each year an output which is the mean of that of countries shown by flag overlay (likely with the same Gross Domestic Product, per capita). See global "super rich"/"superrich" for more details on how alloting a single place of residence for such entrepeneurs and business owners, largely shaping such data, is difficult and problematic.