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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $88,517 | $734,558 | $75,606 | $5,617,934 | $48,835 | $1,535,588 | $27,074,920 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $20,607 | | $5,912 | $16,935 | | $6,738 | $673,945 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $177,492 | $60 | $17,192 | $113,667 | $3,425 | $50,259 | $13,445 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $21,822 | | | $17,732 | $10,575,279 | $2,262,306 | $2,554,594 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $463 | $37,963 | $237,295 | $20,642 | $24,788 | $207 | $55 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $9,130 | $6,937 | $1,923 | $68 | | $179 | $21,663 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $324,032 | $15,491 | $183,379 | $3,891 | $91,840 | $17,450 | $49,669 |
| Total | $642,063 | $795,009 | $521,307 | $5,790,869 | $10,744,167 | $3,872,727 | $30,388,291 |
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