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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 ... | $170,395 | $1,903,931 | $7,155,465 | $8,805,739 | $15,428,003 | $3,393,231 | $2,329,525 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $536,242 | $129,713 | $4,559,360 | $715,202 | $74,453 | $21,973 | $589,418 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,562,823 | $4,879 | $103,536 | $998 | $33,064 | $600 | $417 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $16,225 | $181,045 | $8,236 | $541,279 | $65,700 | | $356,242 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $4,050,321 | $2,635,051 | $2,278,609 | $6,653,388 | $3,730,727 | $6,668,176 | $5,815,762 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $159,840 | $385,207 | $195,284 | $1,112,139 | $23,802 | $1,592,647 | $3,819,936 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,946,737 | $2,665,569 | $339,130 | $58,192 | $1,482 | $162,951 | $24,992 |
| Total | $8,442,583 | $7,905,395 | $14,639,620 | $17,886,937 | $19,357,231 | $11,839,578 | $12,936,292 |
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