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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 ... | $81,011 | $136,679 | $290,340 | $365,061 | $387,057 | $305,848 | $97,451 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $23,723,782 | $16,474,879 | $19,811,569 | $11,692,695 | $7,947,665 | $4,533,505 | $3,859,815 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $772,704 | $1,844,495 | $531,162 | $216,990 | $572,487 | $340,890 | $24,574 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $7,708 | $126,013 | $26,730 | $317,824 | $2,619 | $287,884 | $533,632 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $694,933 | $332,161 | $583,769 | $1,197,046 | $215,248 | $412,297 | $151,355 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $320,558 | $180,275 | $42,880 | $27,633 | $718,869 | $25,135 | $282,972 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $483,007 | $856,868 | $1,472,978 | $203,153 | $2,246,841 | $3,566,139 | $4,870,732 |
| Total | $26,083,703 | $19,951,370 | $22,759,428 | $14,020,402 | $12,090,786 | $9,471,698 | $9,820,531 |
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