A rebound in the Mumbai stock exchange, which is up 76 percent since the start of the year, and continuing economic growth helped enrich the mostly male list of company owners, whose accumulated net worth is equivalent to a quarter of India's gross domestic product. Last year, the number of billionaires halved to just 27, from 54 in 2007. However, Forbes said the amount is “still far shy of their record total of $145 billion in 2007”. __