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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 ... | $7,996,166 | $13,804,267 | $15,668,778 | $21,324,694 | $4,321,196 | $11,174,804 | $5,864,839 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $17 | $20,325 | $15,785 | $4,004 | $11,611 | | $40,763 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $83,801,403 | $82,226,685 | $84,817,576 | $97,024,744 | $713,499 | $59,807,447 | $67,317,564 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $96,125,501 | $112,663,038 | $144,128,007 | $128,326,266 | $57,330,405 | $65,233,406 | $74,580,507 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $562,729 | $362,413 | $546,184 | $1,615,251 | $210,338 | $306,673 | $224,501 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $204,757,503 | $263,585,283 | $267,238,206 | $261,127,721 | $132,491 | $167,108,113 | $187,073,763 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $733,959 | $606,400 | $984,289 | $734,917 | $795,423 | $1,464,359 | $1,447,064 |
| Total | $393,977,278 | $473,268,411 | $513,398,825 | $510,157,597 | $63,514,963 | $305,094,802 | $336,549,001 |
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