Of the world’s population of more than 7 billion, around 200,000 people—or 0.003 percent—have a net worth of more than $30 million. These super-wealthy individuals (UHNWs, as the research firm Wealth-X deems them, for "ultra-high net worth") control a handy $29.7 trillion, according to an analysis of Wealth-X data charted by CNN.