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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 ... | $9,474 | $33,840 | | $37,062 | $9,715 | $70,127 | $347,673 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $836,361 | | | $43,588 | | | $98,048 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $5,288,422 | $360,745 | $399,949 | $1,050,131 | $966,448 | $758,614 | $896,398 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $13,211 | $333,753 | $1,420 | | $566,588 | $683 | $545,551 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $889,950 | $705,683 | $1,241,338 | $748,511 | $452,002 | $417,534 | $1,315,059 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $290,264 | $83,869 | $1,333,569 | $500,789 | $761,435 | $873,372 | $210,757 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $596,147 | $197,690 | $1,215,585 | $2,904,755 | $2,863,333 | $2,293,543 | $6,266,380 |
| Total | $7,923,829 | $1,715,580 | $4,191,861 | $5,284,836 | $5,619,521 | $4,413,873 | $9,679,866 |
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