Proportion of urban population in developing world increased by 10 percentage points during 1990-2010 and reached 45% in 2010. Income growth reduced the proportion of urban population living in slums from 46% in 1990 to 33% in 2010.
Nevertheless, population living in slums continues to grow and in 2010 it amounted to 828 million people (+171 million since 1990). More than half of increase comes from Sub-Saharan Africa, where population living in slums grew by 97 million from 1990.

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