Source: 2020 AATM database. Note: Main cereals and cassava include the entire cassava/maize/rice/wheat commodities; Vegetable oils include groundnuts/palm/rapeseeds/soy oils; in each of the three value chains, we include unprocessed, semi-processed, and processed commodities. For each series, the linear trend line has been added. Second, these three value chains are major foods in terms of kCal/person/day: in four populous African countries (Egypt, Ethiopia, Nigeria, and South Africa), they represent between 38.4 percent and 71.8 percent of the total food supply in kCal/person/day (see Table 4.1). 3 Table 4.1 Food supply by value chain, in primary crop equivalent (kCal/person/day