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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 ... | | $17,098 | | $7,106,879 | $2,187,157 | $9,645,272 | $44,602,340 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $47,459 | $177,551 | $203,436 | $319,202 | $1,189,296 | $2,157 | $126,566 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $41,190 | $38,984 | $316,600 | $5,585,155 | $2,365,759 | $531,885 | $177,362 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | | | $98,567 | $286,581 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $77,950 | $204,576 | $150,101 | $265,008 | $208,472 | $142,928 | $248,702 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $51,710 | $192,314 | $396,792 | $97,446 | $1,772,066 | $930,135 | $781,396 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $57,586 | $271,056 | $120,271 | $174,996 | $1,295,294 | $472,060 | $140,083 |
| Total | $275,895 | $901,579 | $1,187,200 | $13,548,686 | $9,018,044 | $11,823,004 | $46,363,030 |
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