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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | | $27,044 | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | $8,142 | | | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $29,744 | $29,707 | $2,780 | $9,874 | $6,179 | $16,569 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $1,150 | | | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | | $29,916 | | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | | | | | | $436 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $10,195 | $252,604 | $73,416 | $47,079 | $32,903 | |
| Total | $41,089 | $312,227 | $84,338 | $56,953 | $66,126 | $17,005 |
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