Wealth held by the world's billionaires has grown from $3.4 trillion in 2009, right after the meltdown, to $8.9 trillion in 2017. (UBS and PwC Billionaires Insights via Bloomberg)
The 3.8 billion people who make up the world's poorest half saw their wealth decline by 11% last year. (Oxfam, which works to alleviate poverty, via AP)
