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Per capita gross geographic product (GGP) in Johannesburg is R31 000. This compares to World Bank-designated middle-income countries whose average GGP per capitais R33 000.
The average annual income per household is R31 048, which is on average 57% higher than that for South Africa as a whole, and 9% higher than the GGP per capita for Gauteng.The city's economy is dominated by four sectors, three of which are service sectors. The four key sectors are: