Africa and the oil price

From the FT:

Surveying 13 non-oil-producing African countries, including South Africa, Ghana, Tanzania, Ethiopia and Senegal, the [International Energy Agency] found that the increase in the cost of oil bought by the countries since 2004 was equivalent to 3 per cent of combined GDP.

This was more than the sum of debt relief and aid received over the past three years by the countries, which have a combined population of 270m, of whom 104m live on less than $1 a day.