Forbes rich list 2011

LAST UPDATED AT 13:07 ON Thu 10 Mar 2011

1. CARLOS SLIM HELU (AND FAMILY): $74bn

The 71-year-old self-made billionaire is the world's richest person for the second year in a row. The Mexican is chairman of Telmex, a telecoms company, and also has fingers in mining, real-estate and art. He is the biggest gainer of the year, having added $20.5bn to last year's fortune.