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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $7,881,428 | $9,420,287 | $27,090,677 | $22,748,062 | $11,170,996 | $25,954,264 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $485,829 | $163,439 | $281,742 | $35,202 | $38,181 | $92,220 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $73,312,824 | $87,617,638 | $94,709,788 | $123,541,361 | $76,070,212 | $90,197,710 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $60,627,214 | $77,186,333 | $106,970,537 | $95,037,490 | $59,607,791 | $78,460,405 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $4,221,793 | $6,364,267 | $10,142,221 | $8,467,864 | $6,207,231 | $5,587,538 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $70,250,188 | $91,145,286 | $106,126,804 | $143,227,949 | $74,280,962 | $92,492,390 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $5,546,479 | $14,182,206 | $12,291,963 | $13,080,390 | $10,232,271 | $8,324,209 |
| Total | $222,325,755 | $286,079,456 | $357,613,732 | $406,138,318 | $237,607,644 | $301,108,736 |
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