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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 ... | $39,558,287 | $13,036,743 | $14,950,704 | $27,645,522 | $13,693,517 | $15,278,466 | $15,488,612 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $48,751,769 | $38,840,383 | $9,631,440 | $41,733,741 | $12,682,186 | $33,694,314 | $34,339,570 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $96,526,498 | $103,442,090 | $129,140,197 | $140,677,637 | $85,515,936 | $81,321,400 | $97,194,147 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $869,745 | $2,409,103 | $869,538 | $645,100 | $1,337,566 | $389,065 | $532,767 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $1,207,044 | $847,190 | $970,465 | $207,779 | $119,917 | $329,376 | $280,501 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $55,980,327 | $50,594,721 | $49,368,423 | $41,748,471 | $19,755,975 | $37,350,006 | $45,632,935 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $911,173 | $903,087 | $4,247,240 | $3,783,542 | $2,400,258 | $1,556,793 | $1,373,452 |
| Total | $243,804,843 | $210,073,317 | $209,178,007 | $256,441,792 | $135,505,355 | $169,919,420 | $194,841,984 |
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