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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 ... | $1,257,642 | $105,479,559 | $6,877,414 | $1,976,281 | $105,263,352 | $58,948,076 | $28,500,979 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $45,465,328 | $426,291 | $308,098 | $164,809 | $21,060,484 | $13,341,384 | $1,806,767 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $34,775,142 | $222,598,293 | $180,233,383 | $304,882,469 | $473,088,436 | $186,538,833 | $69,989,483 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $1,325,856 | $94,148 | $7,114,452 | $1,109,911 | $39,492 | $57,493 | $182,511 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $201,966 | $47,224 | $462,156 | $9,262,780 | $4,239,014 | $2,615,641 | $354,179 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $16,681 | $4,592,889 | $7,709,681 | $6,808,599 | $10,021,319 | $11,421,625 | $3,513,483 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $2,660,585 | $26,286,383 | $3,576,448 | $87,117,568 | $286,029,869 | $116,046,636 | $2,003,247 |
| Total | $85,703,200 | $359,524,787 | $206,281,632 | $411,322,417 | $899,741,966 | $388,969,688 | $106,350,649 |
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