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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 ... | $25,205,290 | $6,357,585 | $876,788 | $3,301,016 | $3,630,604 | $5,751,327 | $20,745,561 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $2,971,464 | $3,240,847 | $296,681 | $5,953,582 | $29,133,223 | $4,864,074 | $1,916,361 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $189,457 | $8,395,069 | $176,087 | $5,532,107 | $6,298,885 | $1,422,457 | $2,085,375 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $207,855 | $529,071 | $2,030,187 | $2,782,402 | $60 | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $405,293 | $2,590,584 | $1,405,023 | $1,472,560 | $148,288 | $576,197 | $52,508 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $495,210 | $313,121 | $2,614,435 | $18,161,751 | $47,950 | $215,749 | $2,524,920 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $270,299 | $338,848 | $494,809 | $615,651 | $1,072,448 | $3,110,702 | $1,733,205 |
| Total | $29,744,868 | $21,765,125 | $7,894,010 | $37,819,069 | $40,331,458 | $15,940,506 | $29,057,930 |
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