Seafood imports are primarily under the jurisdiction of the Food and Drug Administration. These figures represent total US tariff revenues for imports of edible fish and shellfish products. Since most fishery imports are dutyfree, the majority of these amounts are accounted for by imports of a handful of processed products such as canned tuna, sardines and oysters, smoked salmon, and frozen crabmeat. The figures for each year are therefore inflated by approximately 33%.