According to Forbes the USA with 413 US Dollar billionaires of the total 1,210 in the world tops the list of highest number of billionaires. China with 115 billionaires ranks number 2. Russia boasts 101 US Dollar billionaires and ranks number 3 in the list. During 2010 their number in Russia has grown by 30%; in China by 47% and in the USA by only 3%.
Source: http://top.rbc.ru/economics/