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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 ... | $21,324,186 | $19,957,490 | $37,844,629 | $23,323,126 | $31,416,882 | $36,692,004 | $12,938,819 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $8,480,468 | $21,287,378 | $1,640,205 | $21,062,068 | $1,300,574 | $6,391,305 | $16,376,880 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $108,117 | $70,387 | $2,101,218 | $542,891 | $366,537 | $51,118 | $6,174,842 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $619,849 | $3,199,872 | $1,383,544 | $627,162 | | $248,616 | $1,055,934 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,199,997 | $13,552,081 | $17,998,999 | $13,125,030 | $218,370 | $7,107,230 | $20,222,361 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $11,460 | $1,282,511 | $979,469 | $6,275,315 | $904 | $39,740 | $2,278,232 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,673,158 | $301,607 | $612,575 | $16,412,809 | $1,703,519 | $659,392 | $1,284,998 |
| Total | $40,417,235 | $59,651,326 | $62,560,639 | $81,368,401 | $35,006,786 | $51,189,405 | $60,332,066 |
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