Number of billionaires: 22 Total Population: 33,739,900 Notable Billionaires Include: David Thompson (Chairman of Thompson Reuters), Jeffrey Skoll (ex-eBay President) and Guy Laliberté (CEO of Cirque du Soleil).
Number of billionaires: 23 Total Population: 127,560,000 Notable Billionaires Include: Masayoshi Son (CEO of venture capital Softbank Capital), Hiroshi Yamauchi (President and Chairman of Nintendo) and Tadashi Yanai (Founder and President of retail holding company Fast Retailing).
Number of billionaires: 27 Total Population: 7,731,167 Notable Billionaires Include: Ernesto Bertarelli (biotech entrepreneur known for Merck-Serono) and Esther Grether (art collector and Swatch shareholder).
Number of billionaires: 29 Total Population: 7,003,700 Notable Billionaires Include: Li Ka-shing (businessman and Chairman of Hutchison Whampoa Limited) and Thomas and Raymond Kwok (inherited Real Estate developer Sun Hung Kai Properties.)
Number of billionaires: 42 Total Population: 61,838,154 Notable Billionaires Include: Gerald Cavendish Grosvenor (owner of Real Estate property company Grosvenor Group), Bernard Ecclestone (sports entrpreneur, CEO of Formula 1 racing Management) and Richard Branson (Chairman of Virgin Group).
Number of billionaires: 43 Total Population: 81,879,976 Notable Billionaires Include: Karl Albrecht (Founder of discount supermarket chain Aldi) and Susanne Klatten (shareholder in BMW and pharmaceutical manufacturer Altana).
Number of billionaires: 47 Total Population: 1,155,347,678 Notable Billionaires Include: Lakshmi Mittal (chairman and CEO of steelmaker ArcelorMittal) and Mukesh Ambani (Chairman and managing director of conglomerate Reliance Industries).
Number of billionaires: 58 Total Population: 141,850,000 Notable Billionaires Include: Vladimir Lisin (Chairman of Novolipetsk Steel), Vagit Alekperov (president of oil company Lukoil) and Roman Abramovich (Oil businessman and owner of England's Chelsea Football Club)
Number of billionaires: 72 Total Population: 1,331,460,000 Notable Billionaires Include: Robin Li (CEO and Founder of search engine Baidu), Liang Wengen (Chairman and main shareholder of manufacturer Sany Group) and Zong Qinghou (founder of beverage producer Wahaha).
Number of billionaires: 396 Total Population: 307,006,550 Notable Billionaires Include: Bill Gates (Chairman of Microsoft), Warren Buffett (Chairman and CEO of Berkshire Hathaway) and Larry Ellison (Co-founder and CEO of enterprise software company Oracle Corporation).