United States airborne foreign trade

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SUnited States A airborne

f Foreign Trade


U. S. DEPARTMENT OF COMMERCE
Luther H. Hodges, Secretary

BUREAU OF THE CENSUS
Richard M. Scammon, Directo


November 1963 March 5, 1


CUSTOMS DISTRICT BY CONTINENT


COVERAGE


This or t. sent ted States Customs district
by cont icsr on United States airborne
export and import shipments made in foreign trade.
Exports
These statistics represent exports of domestic and
foreign merchandise combined and include government
as well as 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 ship-
ments, Mutual Security Program economic assistance
shipments, and shipments of agricultural commodi-
ties under P. L. 480 (The Trade Development and
Assistance Act of 1954, as amended) and related
laws. Shipments to United States armed forces and
diplomatic missions abroad for their own use are
not included in the export statistics. United
States trade with Puerto Rico and United States
possessions and trade between United States posses-
sions are not included in this report, but exports
from Puerto Rico to foreign countries are included
as a part of the United States export statistics.
Merchandise shipped through the United States in
transit from one foreign country to another, when
documented as such through United States Customs,
is excluded. (Foreign merchandise which has entered
the United States as an import and is subsequently
re-exported is not treated as in-transit merchan-
dise, and is included in this report.) The figures
in this report exclude exports of household and
personal effects, shipments by mail and parcel post
and shipments of airplanes under their own power.

Effective with the statistics for January 1963, the
information shown for exports to Canada represents
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 information shown for
exports to countries other than Canada represents
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. In addition to these data, esti-
mated data for shipments valued under $100 based on
a 10 percent sample of such shipments are also included


in the figures shown in the "Total" columns in Table
1. These estimates for shipments valued under $100
are not included in the other figures in the table.
Since the export figures shown include estimates
based on a sample of low valued shipments, they are
subject to some degree of sampling variability.
A rough guide to the general level of sampling
variability (on a two chances out of three basis)
of value totals shown is given below. Usually the
higher value figures will have the lower percent
sampling errors. Detailed information on the sam-
pling variability of individual figures is avail-
able upon request.


Value totals for
"Total" and North
America of:


$1,000,000 and over
$500,000-$1,000,000
$100,000-$500,000
$20,000-$100,000
Cells of under $20,000



Value totals for
continents of South
America, Europe,
Asia, Australia and
Oceania, and Africa of:

$300,000 and over
$100,000-$300,000


$20,000-$100,000


Under $20,000

Cells of $0


Proportion of cells with
sampling variability of:
under under under under 20%
2% 5% 10% 20% and
over
.60 .85 1.00
.45 .65 .70 1.00
.15 .40 .45 .55
.25 .75
Are likely to have sampling
variability from $10,000
to $20,000

Are likely to have sampling
variability of:




Less than 2%
Less than 5% with over half
of the totals less than 2%

Generally less than 10%
with over half of the
totals less than 5%
Generally $1,000 to $2,000
Generally less than $500


USCOMM-DC
Prepared in the Bureau of the Census, Foreign Trade Division
For sale by the Bureau of the Census, Washington, D.C. 20233. Price 10o per copy.
Annual subscription (FT 900, 930, 950, 970, 975, 985, and 986 combined) $5.00.









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

Imorts

These statistics represent general imports which
are a combination of imports for immediate consump-
tion and entries into bonded warehouses. The sta-
tistics include government as well as nongovernment
shipments of merchandise by air from foreign coun-
tries to the United States. However, American
goods returned by the United States armed forces
for their own use are excluded. United States trade
with Puerto Rico and with United States possessions
and trade between United States possessions are not
included in this report but imports into Puerto
Rico from foreign countries are considered to be
United States imports and are included. Merchandise
shipped through the United States in transit from
one foreign country to another, when documented as
such through United States Customs, is not reported
as imports and is excluded from the data shown in
this report. (Foreign merchandise which has entered
the United States as an import and is subsequently
re-exported is not treated as in-transit merchan-
dise, 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 airborne general import statistics reflect
fully compiled data for formal entry shipments val-
ued at $100 and over combined with estimated data
for shipments reported on informal entries valued
at $250 or less based upon a 10 percent sample of
such shipments. These combined data are shown in
the "Total" column for the value data in Table 2 of
this report. The continent and district by conti-
nent value totals shown in the table include data
for formal entries valued at $100 and over but ex-
clude the estimated dollar value for shipments re-
ported on informal entries valued $250 or less.


The shipping weight information excludes shipping
weight data for informal entries since this infor-
mation is not required to be shown on such entries.
Some rough indication as to the volume of shipping
weight represented by informal entries may be ob-
tained by reference to the air export statistics
where low valued shipments (under $100) are approx-
imately 2 to 3 percent of the air export value and
from 10 to 12 percent of the air.export shipping
weight. Import shipments by air reported on formal
entries valued at less than $100 are entirely ex-
cluded from the air import statistics. These under
$100 formal import shipments amount to less than 1
percent of the total air import value and shipping
weight.

As noted above, the value figures for total air
imports by Customs district include estimates of
informal entries ($250 or less) based on a 10 per-
cent sample of such entries. They are, therefore,
subject to sampling variability. In general, the
higher value figures will have the lower percent
sampling errors. The following table gives a rough
guide to the sampling variability of Customs dis-
trict totals. More detailed information on the
sampling variability of individual figures is
available on request.


Value totals of:



$500,000 and over

$100,000 $500,000

$20,000 $100,000

Under $20,000


Are likely to have
sampling variability
limits of:

Less than 1%

1% to 5%

5% to 15%

$1000 to $2000


The Customs district value and shipping weight
totals shown include a small amount of shipments
which could not be distributed by continent.











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