|TEUs (left axis)||DWT (right axis)|
KEY: dwt = deadweight tons. TEUs = twenty-foot equivalent units. One 20-foot container equals one TEU, and one 40-foot container equals two TEUs.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, based on data from U.S. Department of Transportation, Maritime Administration, which are drawn from the Lloyd's Maritime Intelligence Unit, Vessel Movement Data File, and are available at www.marad.dot.gov, as of Sept. 17, 2010.