The rich aren't getting richer these days

Even the world's ultra-rich are feeling the pinch of a slowing economy. (Sort of.)
Thanks to falling commodity prices, the stronger dollar, and the dilution of wealth in growing families, total billionaire wealth dropped by $300 billion to $5.1 trillion last year, according to a new report by UBS and PwC. On average, their collective wealth fell to $3.7 billion from $4 billion.
"For the first time since the aftermath of the global financial crisis, billion