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| Commodity | 2005 | 2006 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $389,707,009 | $247,444,736 | $48,399,555 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $38,119,507 | $106,925,291 | $165,462,806 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $67,054,498 | $56,522,801 | $94,942,247 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $5,483,683 | | $2,094,209 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,455,875 | $25,956 | $10,483,517 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $14,851,232 | $2,416 | $2,437,682 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,347,571 | $46,119 | $1,860,140 |
| Total | $521,019,375 | $410,967,319 | $325,680,156 |
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