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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $8,342,353 | $4,502,764 | $32,978,236 | $19,817,256 | $14,731,486 | $9,985,483 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,025,623 | $12,395,708 | $1,498,070 | $467,602 | $14,515,975 | $207,751 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $414,687 | $150,299 | $41,279,526 | $4,838,213 | $15,447,469 | $806,160 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $316,039 | $423,027 | $19,726,547 | $3,572,538 | $1,561,761 | $873,144 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,646,069 | $29,259,631 | $2,174,536 | $13,413,146 | $19,160,942 | $4,531,284 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,701 | $586,473 | $11,258,038 | $1,866,066 | $471,373 | $400,081 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $98,437 | $6,641,789 | $1,838,086 | $8,101,047 | $903,329 | $13,616,544 |
| Total | $18,848,909 | $53,959,691 | $110,753,039 | $52,075,868 | $66,792,335 | $30,420,447 |
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