Over half of all countries and two thirds of developing countries are commodity-dependent, with commodity dependence concentrated in sub-Saharan Africa and least developed countries. The number of commodity-dependent countries has increased over the past 20 years, mainly due to a rise in mineral-dependent countries, while the dominant export product group changed in only 25% of countries. Changes in commodity prices partly explain the evolution of commodity dependence by product group, with dependence on agricultural exports declining as prices fell.