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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 ... | $797,153 | $499,139 | $402,464 | $1,752,647 | $539,192 | $562,047 | $1,398,301 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $4,627,663 | $523,581 | $1,078,634 | $2,872,635 | $994,668 | $2,092,382 | $1,871,789 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,309,073 | $6,508,850 | $10,310,028 | $19,337,541 | $12,108,619 | $18,836,557 | $21,286,664 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $62,151 | $270,218 | $792,584 | $36,785 | $102,749 | $414,111 | $509,575 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,092,454 | $3,170,682 | $3,914,723 | $6,608,938 | $4,586,487 | $1,253,755 | $2,816,313 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $3,555,344 | $5,224,862 | $7,846,343 | $22,168,428 | $4,307,676 | $8,962,594 | $17,929,213 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $25,456,121 | $893,942 | $1,027,517 | $1,290,908 | $448,403 | $452,960 | $1,244,510 |
| Total | $43,899,959 | $17,091,274 | $25,372,293 | $54,067,882 | $23,087,794 | $32,574,406 | $47,056,365 |
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