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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 ... | $83 | $23,353,835 | | $259,142 | $2,606,575 | $1,461,367 | $584,491 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $418,207 | $7,344,781 | $10,219,296 | $992,317 | $4,019,225 | $4,498,524 | $1,244,476 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $6,235 | $60,522 | $73,745 | $68,500 | $3,643,771 | $4,182,158 | $7,168 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $9,997 | $5,387 | $39,013 | $69,573 | | | $6,633 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $6,887,844 | $260,642 | $618,785 | $586,760 | $116,601 | $181,565 | $62,777 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $14,304 | $11,898 | $582,984 | $300,173 | $26,130 | $887,560 | $2,364,929 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $2,333,482 | $1,368,364 | $1,467,371 | $2,072,524 | $779,756 | $890,626 | $905,805 |
| Total | $9,670,152 | $32,405,429 | $13,001,194 | $4,348,989 | $11,192,058 | $12,101,800 | $5,176,279 |
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