The collective net worth of the 691 billionaires is $2.2 trillion, up $300 billion from the combined worth of the 587 people listed last year, according to the 19th annual ranking of the richest people on the planet by Forbes magazine. Every region saw gains. The world's richest moguls now hail from 47 countries, including, for the first time, Kazakhstan, Poland, Ukraine and even Iceland. The newcomers include 69 Americans and 38 Europeans. More than half of them are entirely self-made. American gas pipeline tycoon Daniel Duncan, who was raised by his grandmother after his mother died when he was 7, debuts on the list as the wealthiest new billionaire, with a net worth of $5.1 billion.
