United States airborne foreign trade

3> V f Lr T f 1 (-1 If


United States Airborne

Foreign Trade


U.S. DEPARTMENT OF COMMERCE
Alexander B. Trowbridge, Secretary
William H. Shaw, Asst, Secy.. Economic Affairs


OF THE CENSUS
loss Eckler, Director


SUMMARY REPORT
FT 986


COVERAGE


This report presents statistics on U.S. exports and
imports by air in U.S. customs district by continent
arrangement. Data have been compiled from Shipper's
Export Declarations (Commerce Form 7525-V) and
import entries during the regular processing of statis-
tical data on foreign trade shipments. The customs
districts shown in this report are those having combined
exports and imports by air valued at $2 million or more
during the calendar year 1966. A complete list of the
customs districts and ports currently in effect appears
in the January 1, 1967 edition of Schedule D, Code Clas-
sification of United States Customs Districts and Ports.

Exports

These statistics represent exports of domestic and
foreign merchandise combined and include government
and nongovernment shipments of merchandise by air
from the United States to foreign countries. The
statistics, therefore, include Department of Defense
Military Assistance Program--Grant-Aid shipments,
Mutual Security Program economic assistance ship-
ments, and shipments of agricultural commodities
under P.L. 480(TheTrade Development and Assistance
Act of 1954, as amended) and related laws. Shipments
to U.S. armed forces and diplomatic missions abroad
for their own use are not included in the export
statistics. U.S. trade with Puerto Rico and U.S.
possessions and trade between U.S. possessions are not
included in this report, but exports from Puerto Rico to
foreign countries are included as a part of the U.S.
export statistics. Merchandise shipped through the
United States in transit from one foreign country to
another, when documented as such through U.S. Customs,
is excluded. (Foreign merchandise that has entered the
United States as an import and is subsequently reexported
is not treated as intransit merchandise, and is included
in this report.) The figures in this report exclude ex-
ports of household and personal effects, shipments by


mail and parcel post, and shipments of airplanes under
their own power.

For security reasons, certain commodities are desig-
nated as Special Category commodities, for which
security regulations place restrictions upon the export
information that may be released. The data shown in
this report for individual customs districts and conti-
nents exclude exports of Special Category commodities,
but overall shipping weight and value totals for Special
Category commodities are shown. Further information
and a list of Special Category commodities may be ob-
tained from the Bureau of the Census.


The statistics shown for exports to Canada represent
fully compiled data for shipments individually valued
$2,000 and over combined with estimated data for
shipments valued $100-$1,999 based on a 10-percent
sample of such shipments. The statistics shown for
exports to countries other than Canada represent
fully compiled data for shipments individually valued
$500 and over combined with estimated data for ship-
ments valued $100-$499 based on a 50-percent sample
of such shipments. Effective with the statistics for
January 1967, estimated shipping weight and value data
are also shown for shipments valued under $100. These
estimates are not included in the data shown for individ-
ual customs districts.


Since the export figures shown include estimates based
on a sample of low-valued shipments, they are subject to
some degree of sampling variability. The following is a
rough guide to the general level of sampling variability
(on a 2 chances out of 3 basis) of value totals. Usually,
the higher value figures will have the lower percent
sampling errors. Detailed information on the sampling
variability of individual figures is available upon request.


For sale by the Bureau of the Census, Washington, D.C. 20233. Price 10q per copy.
Annual subscription (FT 900, 975, 985, and 986 combined) $5.00.










Proportion of cells with
Value totals for sampling variability of:
"Total" and "North 20%
America" of: under under under under
2% 5% 10% 20% and
over

$1,000,000 and over .60 .85 1.00

$500,000-$1,000,000 .45 .65 .70 1.00

$100,000-$500,000 .15 .40 .45 .55

$20,000-$100,000 .25 .75

Cells of under $20,000 Are likely to have sampling
variability from $10,000
to $20,000


Value totals for Are likely to have sampling
continents of South variability of:
America, Europe,
Asia, Australia and
Oceania, and Africa of:

$300,000 and over Less than 2%

$100,000-$300,000 Less than 5% with over half
of the totals less than 2%

$20,000-$100,000 Generally less than 10%
with over half of the
totals less than 5%

Under $20,000 Generally $1,000 to $2,000

Cells of $0 Generally less than $500

The sampling variability of shipping weight figures, in
percentage terms, can be approximated by the percent
sampling variability of value.

Imports

These statistics represent general imports, which are
a combination of imports for immediate consumption


and entries into bonded warehouses. The statistics
include government as well as nongovernment shipments
of merchandise by air from foreign countries to the
United States. However, American goods returned by
the U.S. Armed Forces for their own use are excluded.
U.S. trade with Puerto Rico and with U.S. possessions
and trade between U.S. possessions are not included in
this report, but imports into Puerto Rico from foreign
countries are considered to be U.S. imports and are
included. Merchandise shipped through the United States
in transit from one foreign country to another, when
documented as such through U.S. Customs, is not re-
ported as imports and is excluded from the data shown
in this report. (Foreign merchandise that has entered
the United States as an import and is subsequently re-
exported is not treated as intransit merchandise and is
included in this report.) Imports of household and
personal effects, imports by mail and parcel post, and
imports of airplanes under their own power are not
included.

The statistics shown for individual customs districts
represent fully compiled data for shipments valued $251
and over. Data for shipments valued under $251, re-
ported on formal and informal entries (informal entries
generally contain items valued under $251), are esti-
mated from a 5-percent sample, effective January 1967.
Prior to January 1967, the estimates were based on a 1-
percent sample. Separate shipping weight and value
estimates for shipments valued under $251 are shown,
effective with the January 1967 statistics. The shipping
weight data are estimated from the values on the basis
of constants that have been derived from an observation
of the value-weight relationships in past periods.

Since the statistics showing total value of imports
by all carriers include sample estimates, they are
subject to sampling variability. In general, the
higher value figures will have the lower percent
sampling errors. Value totals of $500,000 and over will
generally have a sampling variability of less than 3
percent; value totals of under $500,000 will generally
have a sampling variability of less than $50,000.












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