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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 ... | $91,502,050 | $14,537,942 | $10,219,139 | $390,107,877 | $129,682,082 | $6,208,546 | $32,711,563 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $11,157,018 | $2,313,356 | $51,078 | $4,648,243 | $2,754,547 | $1,523,434 | $40,860,832 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $3,233,325 | $460,029 | $133,850 | $1,879 | $20,772 | $802,659 | $553,786 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $20,880,453 | $16,175,963 | $2,924,629 | $6,763,821 | $4,764,500 | $3,599,218 | $951,311 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $38,272,006 | $29,850,848 | $31,039,494 | $92,695,620 | $66,706,090 | $27,611,851 | $46,978,495 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $9,048,741 | $3,571,017 | $6,791,424 | $13,395,626 | $8,078,977 | $16,484,543 | $10,633,869 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $2,766,963 | $2,717,353 | $1,859,341 | $3,819,068 | $7,754,427 | $1,381,348 | $2,011,693 |
| Total | $176,860,556 | $69,626,508 | $53,018,955 | $511,432,134 | $219,761,395 | $57,611,599 | $134,701,549 |
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