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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,427,959 | $3,276,743 | $3,252,308 | $10,296,144 | $6,318,059 | $1,921,723 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $50,444 | $299,120 | $47,438 | $672,042 | $108,251 | $732,997 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $173,292 | $587,549 | $92,283 | $1,084,574 | $5,354,548 | $1,408,241 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $190,056 | $426,687 | $2,500,660 | $170,771 | $119,309 | $2,384,420 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $57,375 | $122,750 | $555,792 | $694,335 | $115,289 | $873,722 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $6,853,254 | $9,600,381 | $5,982,843 | $27,186 | $49,033 | $1,896,278 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $8,351,009 | $7,377,123 | $3,463,182 | $2,799,407 | $1,375,816 | $3,994,420 |
| Total | $18,103,389 | $21,690,353 | $15,894,506 | $15,744,459 | $13,440,305 | $13,211,801 |
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