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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $7,025,065 | $2,850,036 | $16,281,432 | $15,930,628 | $8,082,215 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $237,542 | $497,952 | $12,753,739 | $7,159,475 | $3,063,955 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,860,728 | $10,087,839 | $21,019,422 | $17,873,277 | $7,431,580 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $10,077,841 | $4,059,065 | $4,067,128 | $65,988,625 | $21,975,610 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $726,753 | $1,142,228 | $14,269,280 | $28,041,914 | $2,073,973 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,807,589 | $1,405,308 | $5,007,680 | $3,458,539 | $2,744,115 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,189,961 | $2,007,285 | $5,010,075 | $3,996,388 | $1,610,145 |
| Total | $25,925,479 | $22,049,713 | $78,408,756 | $142,448,846 | $46,981,593 |
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