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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 ... | $147,101 | $59,350 | | $137,668 | | $10,319 | $37,052 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $15,416 | $81,603 | $177,535 | $7,857 | $11,642 | $430,104 | $1,664,837 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,402,152 | $5,049,027 | $13,207,603 | $10,802,418 | $7,731,688 | $7,440,124 | $8,764,335 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | $21,537 | $1,887 | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $366,519 | $821,529 | $1,363,061 | $1,336,957 | $1,639,438 | $2,117,771 | $4,619,749 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $11,017,754 | $12,130,761 | $19,680,078 | $20,547,752 | $9,920,328 | $14,151,976 | $8,313,496 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $229,692 | $8,789 | $76,591 | $439,623 | $1,124,596 | $49,553 | $446,079 |
| Total | $19,178,634 | $18,151,059 | $34,526,405 | $33,274,162 | $20,427,692 | $24,199,847 | $23,845,548 |
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