Mexican businessman Carlos Slim Helu participates in a panel [Getty Images]

MEXICO - MAY 12: Mexican businessman Carlos Slim Helu participates in a panel discussion during the Hemispheria Summit in San Pedro Garza Garcia, Mexico, May 12, 2005. Slim, who amassed $23.8 billion from banking and telecommunications, has started a three-pronged drive to make money from his country's burgeoning construction industry. (Photo by Mauricio Alanis/Bloomberg via Getty Images)

Bloomberg Bloomberg