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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 ... | $729,606 | $813,209 | $36,749 | $272,862 | $369,220 | $295,724 | $168,310 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $921,209 | $2,451,708 | $2,054,398 | $2,443,972 | $4,857,538 | $4,853,862 | $1,910,173 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $895,706 | $801,806 | $1,215,938 | $2,878,206 | $6,160,004 | $9,242,206 | $4,868,114 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $173 | | | | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,918,912 | $2,915,155 | $1,723,990 | $6,349,194 | $1,303,532 | $2,729,341 | $3,441,950 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,888,444 | $5,571,060 | $12,119,853 | $14,910,823 | $7,830,066 | $1,607,519 | $5,796,134 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,576,887 | $317,301 | $255,566 | $10,716,824 | $6,538,671 | $163,666 | $292,329 |
| Total | $7,930,937 | $12,870,239 | $17,406,494 | $37,571,881 | $27,059,031 | $18,892,318 | $16,477,010 |
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