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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 ... | $1,107,679 | $25,175,028 | $5,308,652 | $2,666,939 | $663,762 | $275,925 | $90,321 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $710,997 | $841,163 | $128,475 | $242,984 | $210,923 | $4,208,200 | $2,032,733 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $59,484 | $182,265 | $103,293 | $32,467 | $129,411 | $551,530 | $289,645 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $2,788,047 | $579,937 | $289,785 | $1,685,568 | $777,834 | $806,466 | $385,562 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $679,323 | $254,796 | $933,031 | $57,326 | $324,164 | $115,723 | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $219,904 | $304,709 | $137,288 | $1,002 | $3,713 | $16,086 | $92,168 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $107,124 | $1,812,128 | $284,550 | $5,060 | $70,331 | $40,778 | $318,899 |
| Total | $5,672,558 | $29,150,026 | $7,185,074 | $4,691,346 | $2,180,138 | $6,014,708 | $3,209,328 |
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