Fig. 4. Change in net bilateral trade flow of food and agricultural products. Here food
and agricultural products include crops, livestock and processed livestock products
and processed food products (see Table A2 for detailed information). The arc length
is proportional to the magnitude of the flow. Wide end is the sending region;
pointed end is the receiving region. ‘‘+’’ means increase in net exporting; ‘‘’’ means
increase in net importing. Trading within the region is excluded.