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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $1,223,149 | $1,165,257 | $31,811,547 | $33,297,732 | $32,690,826 | $32,640,239 | $51,891,123 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $294,973 | $3,914 | $1,209,903 | $252,505 | $1,982,614 | $14,596,013 | $9,546,434 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $5,906,043 | $8,956,296 | $12,277,379 | $57,913,230 | $17,192,566 | $18,352,645 | $18,785,104 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $29,604,021 | $29,107,524 | $39,938,748 | $50,719,795 | $19,121,663 | $27,943,817 | $38,309,741 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $291,722 | $1,488,019 | $97,775 | $1,502,421 | $4,857,905 | $4,966,993 | $3,707,046 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $13,296,533 | $13,885,655 | $37,297,494 | $92,608,574 | $62,075,503 | $46,703,393 | $59,971,554 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $46,642,819 | $91,975,461 | $66,042,564 | $65,088,362 | $58,130,590 | $64,123,687 | $24,644,499 |
| Total | $97,259,260 | $146,582,126 | $188,675,410 | $301,382,619 | $196,051,667 | $209,326,787 | $206,855,501 |
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