Other transportation receipts and payments were revised based on Bureau of the Census information on import charges and related shipping weights, which were classified by flag of ship operator for the first time in January 1980. The flag of ship operator is the key factor used to determine the residency of the foreigner. Previous estimates were based largely on BEA annual sample surveys of foreign ship operators and their U.S. agents. Revisions for 1981-1982 were based directly on the new information; revisions for 1977-1980 were extrapolated from 1981-1982.
Published