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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 ... | $8,396,809 | $8,488,646 | $6,820,569 | $8,900,714 | $6,985,652 | $9,059,056 | $130,572,264 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | | $22 | $23,917 | $31,237 | $10,546 | $158,606 | $22,143 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $76,141,798 | $93,572,657 | $115,511,233 | $146,110,213 | $95,177,304 | $128,229,922 | $173,770,961 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $45,322,467 | $52,973,241 | $69,235,335 | $70,931,460 | $46,056,016 | $64,424,714 | $77,041,487 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $4,917,483 | $6,259,168 | $9,296,372 | $10,048,902 | $6,506,326 | $4,972,175 | $9,031,495 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $100,034,990 | $131,573,809 | $164,259,983 | $198,599,583 | $91,006,509 | $129,449,291 | $176,070,935 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $6,483,279 | $13,988,315 | $19,803,125 | $24,377,869 | $20,514,959 | $16,753,542 | $25,112,115 |
| Total | $241,296,826 | $306,855,858 | $384,950,534 | $458,999,978 | $266,257,312 | $353,047,306 | $591,621,400 |
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