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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 ... | $278,267 | $132,997 | $229,198 | | $189,038 | $218,868 | $93,112 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $554,029 | $795,453 | $1,309,188 | $728,305 | $167,815 | $199,979 | $309,006 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $541,580 | $107,928 | $10,028 | $214,846 | $14,041 | $111,994 | $363,940 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $37,806 | $28,637 | | | | $6,493 | $16,684 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,884,183 | $918,504 | $2,042,937 | $1,569,514 | $2,102,351 | $3,917,976 | $6,501,073 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $533,160 | $569,762 | $1,688,563 | $212,882 | $136,340 | $752,233 | $869,218 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $270,021 | $721,440 | $465,520 | $187,442 | $288,291 | $560,725 | $2,342,031 |
| Total | $4,099,046 | $3,274,721 | $5,745,434 | $2,912,989 | $2,897,876 | $5,768,268 | $10,495,064 |
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