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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 ... | | | $13,253 | $2,197,494 | $2,970,153 | $10,058,332 | $13,847,018 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $275,625 | $67,933 | $802,677 | $334,202 | $268,011 | $198,808 | $1,224,922 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $49,181 | | $442,536 | $17,609 | $225,270 | $107,738 | $48,000 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $48,822 | $70,268 | $54,758 | $13,314 | $3,372 | $450,704 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $428,366 | $3,072 | $6,136 | $518,659 | $1,917,156 | $134,920 | $294,379 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,466,115 | $1,007,639 | $202,212 | $1,171,243 | $563,987 | $33,293 | $16,999 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $34,042 | $70,537 | $984,573 | $197,542 | $152,818 | $53,348 | $201,226 |
| Total | $2,253,329 | $1,198,003 | $2,521,655 | $4,491,507 | $6,110,709 | $10,589,811 | $16,083,248 |
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