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Ratio of the richest 10% of the population's share of gross national income (GNI) divided by the poorest 40%'s share. It is based on the work of Palma (2011), who found that middle class incomes almost always account for about half of GNI and that the other half is split between the richest 10% and poorest 40%, though their shares vary considerably across countries.

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Related Variables

Income/consumption of poorest quintile (lowest 20%) Income/consumption of poorest decile (lowest 10%) Income/consumption of second poorest quintile (second 20%) Income/consumption of richest decile (highestest 10%)

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Supports GEGs:

Supports SDGs: