A CASE STUDY:GREEN QNIONS AND HEPATITIS A Figure 1 Annual shipments of green onions to the U.S.market1 Million cwt 3.5 3.0 ☐United States ☐Mexico 2.5 2.0 1.5 1.0 0.5 0 1978 81 84 87 9093 96 99 2002 1In 2003,other green onions from Canada and Guatemala totaled less than 1 percent of shipments. Source:Fresh Fruit and Vegetable Shipments.Agricultural Marketing Service,USDA