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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 ... | $469,174 | $116,105 | $265,974 | $754,446 | $36,157 | $14,910 | $9,217 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $87,987 | $662,344 | $1,046,506 | $145,112 | $100,572 | $169,988 | $292,769 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $50,899 | | $28,662 | $45,382 | $6,291 | $258,269 | |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $48,349 | | | | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $597,199 | $265,350 | $2,255,608 | $448,263 | $298,409 | $3,667,226 | $982,910 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,304,063 | $1,989,251 | $180,157 | $1,357,021 | $114,223 | $116,999 | $7,855,580 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $58,822 | $83,568 | $442,598 | $138,092 | $227,658 | $301,435 | $280,789 |
| Total | $2,616,493 | $3,116,618 | $4,219,505 | $2,888,316 | $783,310 | $4,528,827 | $9,421,265 |
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