Forbes list of billionaires In The World 2010

No.  Name                         Net worth (USD)  Age  Citizenship    Residence        Sources of wealth

1   Carlos Slim Helú and family   $53.5 billion   70   Mexico          Mexico          Telmex, América Móvil, Grupo Carso

2   William Henry Gates III       $53.0 billion   54   United States   United States   Microsoft

3   Warren Buffett                $47.0 billion   80   United States   United States   Berkshire Hathaway

4   Mukesh Ambani                 $29.0 billion   53   India           India           Reliance Industries

5   Lakshmi Mittal                $28.7 billion   60   India           United Kingdom  Arcelor Mittal

6   Lawrence Ellison              $28.0 billion   66   United States   United States   Oracle Corporation

7   Bernard Arnault               $27.5 billion   61   France          France          LVMH Moët Hennessy • Louis Vuitton

8   Eike Batista                  $27.0 billion   53   Brazil          Brazil          EBX Group

9   Amancio Ortega                $25.0 billion   74   Spain           Spain           Inditex Group

10  Karl Albrecht                 $23.5 billion   90   Germany         Germany         Aldi Süd

11  Ingvar Kamprad                $23.0 billion   84   Sweden          Switzerland     Ikea

12  Christy Walton                $22.5 billion   55   United States   United States   Walmart

13  Stefan Persson                $22.4 billion   63   Sweden          Sweden          Hennes & Mauritz

14  Li Ka-shing                   $21.0 billion   82   Hong Kong       Hong Kong       Cheung Kong Holdings

15  Jim Walton                    $20.7 billion   62   United States   United States   Walmart