The 15 most billionaire-dense countries
However, while nations like China may house some of the world's richest people, with 400 billionaires, it doesn't actually have the highest number of billionaires in proportion to the population.
Approved Index, a UK-based business-networking group, crunched the numbers from Forbes' billionaire list for 2015 using this week's data and found that the most billionaire-dense nations across the world are pretty surprising.