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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 ... | $11,567,255 | $7,190,307 | $88,552,382 | $13,438,487 | $16,466,063 | $10,160,703 | $23,674,060 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $5,574,649 | $7,876,180 | $4,452,506 | $5,342,955 | $9,192,450 | $8,076,684 | $4,320,094 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $11,800,822 | $2,520,233 | $8,731,680 | $2,670,135 | $5,881,608 | $6,356,382 | $5,851,507 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $1,610,249 | $12,245 | $14,052 | $350,894 | $15,386 | $90,385 | $644,316 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $11,626,579 | $28,777,256 | $19,275,008 | $16,053,625 | $21,053,107 | $14,344,120 | $22,890,258 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,394,856 | $11,695,086 | $19,039,689 | $21,004,582 | $10,007,768 | $11,962,814 | $17,458,799 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,485,373 | $3,581,825 | $4,177,623 | $8,517,825 | $4,595,613 | $2,666,040 | $2,578,864 |
| Total | $51,059,783 | $61,653,132 | $144,242,940 | $67,378,503 | $67,211,995 | $53,657,128 | $77,417,898 |
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