'1' Figure 18-1 refers to merchandise exports only —that is, exports of goods, including primary products (such as agricultural goods, oil, and minerals) and manufactures, measured in current U.S. dollars unadjusted for price inflation. Trade in services, such as tourism and international transport, insurance and financial services, and call-center activities and data processing, is not included. Merchandise trade in 2007 accounted for 80 percent of total world trade.