Exhibit 4. U.S. Domestic Exports1 by Top Ten
        Three-digit NAICS Codes - 2008
 
   In millions of dollars.  (Z) Represents less than one-tenth of the unit of measurement shown.
 
          NAICS Product Description           Total                Related                 Nonrelated              Nonreported
                                              Value    Percent Of     Value    Percent Of     Value    Percent Of     Value    Percent Of  
                                                            Total              Area Total              Area Total              Area Total
                                                          Imports
   Exports Total                             1,300,136       100.0     373,646        28.7     886,498        68.2      39,992         3.1
   Domestic Exports                          1,169,821        90.0     327,151        28.0     802,793        68.6      39,877         3.4
   
   Exports (Decending order, by value of related-party imports)
   
   Top Ten Total                             1,006,940        77.4     327,056        32.5     667,881        66.3      12,003         1.2
   Transportation Equipment                    201,986        15.5      63,946        31.7     135,557        67.1       2,484         1.2
   Chemicals                                   166,136        12.8      61,497        37.0     103,663        62.4         976         0.6
   Computer & Electronic Products              136,386        10.5      47,027        34.5      87,698        64.3       1,660         1.2
   Machinery, Except Electrical                133,845        10.3      32,978        24.6      99,155        74.1       1,713         1.3
   Petroleum & Coal Products                    58,273         4.5      25,014        42.9      33,124        56.8         136         0.2
   Miscellaneous Manufactured Commodities       40,950         3.1      12,784        31.2      27,228        66.5         938         2.3
   Electrical Equipment, Appliances & Compo     34,667         2.7      11,806        34.1      21,895        63.2         966         2.8
   Food & Kindred Products                      48,494         3.7       8,975        18.5      38,934        80.3         585         1.2
   Plastics & Rubber Products                   23,429         1.8       8,338        35.6      14,241        60.8         851         3.6
   Fabricated Metal Products, Nesoi             32,459         2.5       8,197        25.3      22,681        69.9       1,581         4.9
   Re-exports                                  130,314        10.0      46,495        35.7      83,705        64.2         114         0.1
 
   Footnotes:
    1 For definition, see Technical Documentation.
    2 Related-party indicator was missing from documentation.
    3 Total values are the summation of statistical month values and do not include annual revisions or adjustments for late receipts.
 
   NOTE:  This exhibit is compiled from detailed merchandise trade data.  For information on nonsampling errors and other data limitations
                Technical Documentation.
 
 
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