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U.S. Waterborne Freight
Beginning in 1996, shipments of fish are excluded from domestic Inland and Intraport tonnage.
Numbers may not add to totals due to rounding.
1 short ton = 0.907185 short tonnes.
1960: U.S. Army Corps of Engineers, Waterborne Commerce of the United States, Calendar Year 2004 (New Orleans, LA), part 5, tables 1-1, 1-3, and 1-6.
1965-2016: Ibid., Waterborne Commerce of the United States (New Orleans, LA: Annual Issues), part 5, tables 1-2 and 1-3, available at http://www.navigationdatacenter.us/wcsc/wcsc.htm as of Apr. 16, 2018.