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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 ... | $838,000 | $1,452,000 | $3,468,000 | $1,218,000 | $1,792,000 | $68,476,742 | $102,287,557 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,933,000 | $6,357,000 | $3,782,000 | $10,273,000 | $5,129,000 | $4,834,416 | $4,896,378 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,333,000 | $710,000 | $8,074,000 | $3,207,000 | $3,806,000 | $1,613,680 | $2,739,171 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | $6,130,000 | $9,412,000 | | $46,370 | $468,657 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $13,839,000 | $28,422,000 | $12,805,000 | $29,799,000 | $50,637,000 | $40,413,546 | $62,608,313 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $13,954,000 | $15,619,000 | $31,689,000 | $36,872,000 | $31,872,000 | $24,308,541 | $28,413,836 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $41,000 | $617,000 | $54,000 | $595,000 | | $1,325 | $12,360 |
| Total | $38,938,000 | $53,177,000 | $66,002,000 | $91,376,000 | $93,236,000 | $139,694,620 | $201,426,272 |
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