The world trade flows data were compiled by Robert Feenstra of the National Bureau of Economic Research (NBER). Two versions of the data are available.

The most recent version of the data covers the years 1962-2000, and is constructed from United Nations trade data by Robert Feenstra and Robert Lipsey, under a grant from the National Science Foundation. Documentation for this data is included in NBER Working Paper 11040.

An older dataset covers the years 1970-1997, and is constructed by Statistics Canada, who also used the United Nations trade data. The Statistics Canada world trade was purchased and distributed by the NBER under a grant from the National Science Foundation. Documentation for this data is included in NBER Working Paper 5910.

These data are intended for educational and research purposes. Your use of the data indicates agreement with these terms of use.