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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 ... | | | | $1,100,450 | $1,265,624 | $218,782 | $1,216,655 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | $90,916 | $364,718 | $188,595 | $245,486 | $21,332 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $222,757 | $95,344 | $444,839 | $344,392 | $32,888 | $10,898 | $617,386 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | | $397 | $51,767 | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $75,324 | $214,810 | $478,603 | $1,112,133 | $886,719 | $253,848 | $362,615 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $824,962 | $856,823 | $2,170,862 | $1,493,361 | $1,442,418 | $819,049 | $770,272 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $150,424 | $150,377 | $32,227 | $31,084 | $53,879 | $35,908 | $9,406 |
| Total | $1,273,467 | $1,317,354 | $3,217,447 | $4,446,138 | $3,870,520 | $1,635,738 | $2,997,666 |
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