"Forbes" magazine yesterday released its list of the richest former U.S. 400, Bill Gates, to $ 72 billion in net assets among U.S. richest man, Warren Buffett with $ 58.5 billion of net assets in second place, Larry Ellison with $ 41 billion of net assets in third place.It is reported that Bill Gates, Microsoft co-founder, has been ranked 20th consecutive year, the richest man in the United States the throne, his wealth of $ 66 billion over last year increased by $ 6 billion; Warren Buffett, Berkshire Hathaway Chairman and CEO, compared with $ 46 billion last year, an increase of $ 12.5 billion; Larry Ellison, Oracle co-founder, its worth the same.In addition, over the past year the United States continued to increase the wealth of the super-rich, of the top 400 richest total amount of the net assets of $ 1.7 trillion from the end of last year increased to $ 2 trillion....