Back to text above Blank entries indicate that figures directly comparable to exports could not be found. National Agricultural Statistics Service, United States Department of Agriculture, Crop Values 1998 Summary . Production figure refers to broilers. Table 3 . US Department of Commerce, US Aggregate Foreign Trade Data .
Many countries put up more and higher barriers to trade on agricultural than other products.
Tariffs on non-agricultural goods are about one tenth of that amount. The Uruguay Round required that countries replace straight quotas with tariff rate quotas . These are tariffs that are low until imports reach a certain quantity. Above that level, the tariffs become very high. These require that imports meet certain health standards to protect against human, animal and plant diseases and other threats to health that might otherwise come in with the imports.