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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 ... | $398,342 | $11,629,381 | $58,500 | $82,654 | $554,901 | $183,954 | $17,938 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $217,445 | $385,528 | $1,145,419 | $392,066 | $106,732 | $502,810 | $337,773 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $332,838 | $723,195 | $278,994 | $116,079 | $207,591 | $118,185 | $702,312 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $429,102 | $53,541 | $565,151 | $1,264,423 | $1,972,423 | $3,143,370 | $2,520,241 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,661,985 | $3,700,142 | $1,349,907 | $1,619,269 | $291,403 | $7,894,687 | $486,424 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $588,770 | $227,448 | $3,522,870 | $392,662 | $125,436 | $143,460 | $87,996 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,183,488 | $647,973 | $429,261 | $626,538 | $800,795 | $951,413 | $243,263 |
| Total | $4,811,970 | $17,367,208 | $7,350,102 | $4,493,691 | $4,059,281 | $12,937,879 | $4,395,947 |
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