Infography: All the homes in the world are worth $228tr

But countries can be divided into three categories: Boom, Bust & Boom, and Boom

"The entire developed property universe" is worth roughly US$217tr, with residential real estate accounting for the lion's share, according to some sums by Savills; that's around 2.

London tops the table for the most resident multi-millionaires and for HNW importance, but not for billionaire population