Definition: The flow of containers from land-to-sea transport modes, and vice versa, in 20-foot-equivalent units (TEUs), a standard-size container. Data refer to coastal shipping as well as international journeys. Trans-shipment traffic is counted as two lifts at the intermediate port (once to offload and again as an outbound lift). Empty units are included. Per million dollars of GDP figures are based on GDP in current United States dollars.Aggregation: Weighted averages using GDP in current United States dollars as weight. Missing data are not imputed. Source: WDI. Data obtained: 16 January 2014