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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 ... | $155,380 | $337,047 | $1,828,307 | | $331,296 | $31,135 | $415,788 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $97,222 | $491,211 | $93,918 | $113,253 | $117,332 | $23,726 | $19,886 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $31,682 | $26,959 | $203,689 | $101,734 | $158,258 | $27,693 | $135,102 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | $70,660 | $55,694 | $496,098 | $196,472 | $36,958 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $110,047 | $469,191 | $1,259,650 | $1,603,257 | $525,530 | $372,470 | $800,878 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $802,241 | $941,867 | $503,013 | $421,568 | $1,864,787 | $189,906 | $1,449,695 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $99,630 | $222,285 | $646,360 | $697,954 | $159,813 | $132,680 | $278,040 |
| Total | $1,296,202 | $2,488,560 | $4,605,597 | $2,993,460 | $3,653,114 | $974,082 | $3,136,347 |
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