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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 ... | $449,150,137 | $680,979,918 | $352,062,901 | $102,228,706 | $437,749,012 | $184,133,547 | $409,891,787 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $22,562,872 | $14,262,949 | $1,705,070 | $90,926,832 | $147,107,441 | $88,229,868 | $56,957,710 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $3,632,107 | $892,200 | $3,367,216 | $5,290,642 | $822,417 | $6,265,833 | $661,595 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $470,604 | $227,221 | $127,919 | $1,036,740 | $2,546,470 | $1,743,936 | $2,275,718 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,374,402 | $1,745,472 | $4,113,651 | $613,347 | $1,239,744 | $25,520,130 | $40,131,861 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $28,336 | $22,258 | $184,298 | $56,650 | $428,467 | $3,891,666 | $11,832,088 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $652,108 | $4,776,946 | $5,146,373 | $19,555,250 | $9,596,462 | $6,908,227 | $10,742,496 |
| Total | $478,870,566 | $702,906,964 | $366,707,428 | $219,708,167 | $599,490,013 | $316,693,207 | $532,493,255 |
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