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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 ... | $43,316 | $412,002 | $547,554 | $57,786 | $349,240 | $311,465 | $236,864 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $721,227 | $323,026 | $611,595 | $1,013,750 | $700,416 | $943,195 | $5,194,376 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $13,758 | $233,937 | $28,105 | $97,382 | $73,854 | $31,199 | $625,473 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $6,235 | $110,267 | $43,035 | $4,606 | | $842 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,187,177 | $4,964,488 | $5,623,622 | $5,179,046 | $2,090,086 | $3,031,969 | $3,979,978 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $425,731 | $1,848,251 | $2,324,872 | $794,535 | $623,131 | $383,636 | $1,550,879 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $177,042 | $349,718 | $311,879 | $1,070,190 | $1,145,946 | $626,359 | $426,254 |
| Total | $3,568,251 | $8,137,657 | $9,557,894 | $8,255,724 | $4,987,279 | $5,327,823 | $12,014,666 |
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