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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 ... | $350,328 | $34,140 | $41,812,297 | $4,211,762 | $31,414,375 | $2,944 | $565,739 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $259,200 | | $12,979,763 | $5,311,835 | $565,933 | $383,131 | $213,696 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $301,011 | $20,302,492 | $22,342,045 | $74,242,559 | $165,975,754 | $608,186 | $2,324,211 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $3,356,166 | $11,187,089 | | $9,414,893 | $22,566,978 | $4,913,396 | $5,574,435 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,756 | $2,674,555 | $34,489,180 | $736,991 | $19,946 | $352,694 | $725,750 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $142,319 | $136,935 | | $74,357 | $1,938,380 | $859,376 | $4,412,225 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,404,499 | $606,217 | $485,388 | $898,145 | $773,726 | $4,604,017 | $7,329,621 |
| Total | $7,819,279 | $34,941,428 | $112,108,673 | $94,890,542 | $223,255,092 | $11,723,744 | $21,145,677 |
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