The wealth gap in the United States and other developed countries hasn't been this big since the 1980s, according to a new report from the Organization of Economic Cooperation and Development (OECD).
In the 1980s, the top 10% of earners in the developed world made seven times the income of the bottom 10%. But the wealth gap has expanded since. By 2013, the top 10% had 9.6 times the income of the bottom 10%. That was across 34 nations.