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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $3,339 | $30,760 | | | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | $77,008 | | | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,636 | | | | | |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | | | $20,556 | $3,931 | $181 | $18,143 |
| Total | $2,636 | $3,339 | $128,324 | $3,931 | $181 | $18,143 |
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