In Sweden, in contrast, it cuts the Gini by 23 points more than half.
The chart above concentrates on income and uses a number known as the Gini coefficient.
(A Gini index is a measure of income concentration that ranges from 0, representing perfect equality to 100, where all income flows to a single person).
Sub-Saharan Africa saw its Gini index rise by 9% between 1993 and 2008.
They turn to a data set put together by Frederick Solt, a political scientist at the University of Iowa, containing Gini indices for 173 economies spanning a period of five decades.
In America, which does relatively little of it, redistribution trims the Gini index by roughly ten points.
The region's Gini coefficient a standard measure where zero means that income is equally shared and one means one person takes it all fell from 0.57 in 2000 to 0.52 in 2010, but the bank reckons it has more or less been stuck there since.
So much, in fact, that as First Class passengers have spread out to take up the first third of the plane, Air Gini has been forced to replace the luxurious Business Class seats in the real-life configuration with still-comfortable but noticeably smaller chairs.So next time you squeeze your knees into a seat with a 29-inch pitch, you might be thankful for what you've got.
On Air Gini, those eight most-valued passengers three and a half percent of those on board get thirty five percent of the available seating space.
That of children living in poverty has actually grown, reaching 36% last year, because as part of the benefit reforms of 2003 extra payments for families with five or more children were abolished.Israel's Gini coefficient, a measure of income inequality, has also climbed steadily to reach one of the highest levels in the developed world.
