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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 ... | | | | | | $12,660 | $208,742 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | | | | $10,479 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | | $268,803 | | $3,840,129 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | | $23,138 | $6,649 | | $10,984 | $87,848 | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $31,122 | | | $390,877 | | | |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $71,058 | $4,963 | $24,846 | $649 | $32,183 | | $45,181 |
| Total | $102,180 | $28,101 | $31,495 | $391,526 | $311,970 | $100,508 | $4,104,531 |
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