<Li> Bicentennial Edition Historical Statistics of the United States, Colonial Times to 1970 </Li> <Li> U.S. imports for consumption, duties collected, and ratio of duties to value, 1891--2016; </Li> <Li> U.S. imports for consumption under tariff preference programs, 1976--2016 </Li> <Li> U.S. Trade in Goods and Services - Balance of Payments (BOP) Basis, 1960--2010 </Li>

This lowered tariff rates for the first time since the civil war