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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 ... | $36,644,176 | $33,500,491 | $84,369,735 | $313,268,842 | $102,522,014 | $28,999,153 | $63,832,444 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $9,763,762 | $25,367,695 | $13,781,987 | $23,249,931 | $26,240,267 | $14,631,844 | $13,694,452 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $3,102,751 | $7,290,378 | $15,270,399 | $25,134,626 | $18,886,452 | $58,373,485 | $15,909,318 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $25,765,498 | $24,800,856 | $51,972,649 | $64,450,553 | $34,767,928 | $164,095,005 | $36,856,216 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $35,791,221 | $31,767,759 | $46,297,445 | $74,830,268 | $70,027,956 | $88,065,679 | $50,749,937 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,625,492 | $5,670,141 | $48,493,998 | $75,640,758 | $72,318,775 | $106,378,941 | $64,932,838 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $6,052,351 | $15,148,883 | $6,902,707 | $9,896,040 | $9,134,221 | $5,472,901 | $11,144,700 |
| Total | $122,745,251 | $143,546,203 | $267,088,920 | $586,471,018 | $333,897,613 | $466,017,008 | $257,119,905 |
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