According to recent data from the World Bank, in 1978, the 3 African countries with the top 3 highest GNI (Gross National Income) were:

1. South Africa: US$ 48.94B
2. Nigeria: US$ 38.47B
3. Algeria: US$ 23.91B

On the other hand, the 3 African countries with the 3 lowest GNI in 1978 were:

1. Seychelles: US$ 72.83M
2. Guinea-Bissau: US$ 126.87M
3. Gambia: US$ 157.98M

Use the interactive visualization and table below to explore this data for each African country for the year 1978. You can also see links at the bottom of this page to see the historical GNI information for each African country.

The World Bank defines GNI (Gross National Income) as "the sum of value added by all resident producers plus any product taxes (less subsidies) not included in the valuation of output plus net receipts of primary income (compensation of employees and property income) from abroad" .

See also: GNI Per Capita of Africa in 1978.