Nigeria has "rebased" its gross domestic product (GDP) data, which has pushed it above South Africa as the continent's biggest economy.

The Nigerian GDP previously did not include telecoms, information, technology, music, online sales, airlines, and film production industries. The Nigerian statistics office said the GDP for 2013 amounted to 80.3 trillion naira (£307.6bn: $509.9bn).

South Africa`s GDP at the end of 2013 totalled $370.3bn. However, the population of Nigeria stands at 170 million people which is three times larger than South Africa`s. Some economists point out that at that population the country`s economic output is underperforming.

Due to the large population, South Africa`s GDP per-capita is three times larger than Nigeria`s.

Nigeria had not updated its GDP components since 1990 whereas most countries do it at least three years or so. Rebasing is usually done to give the up-to-date picture of an economy.

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