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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 ... | | | $3,375 | | $702,749,294 | $488,473,643 | $406,660,528 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $125,037 | $2,428,610 | $901,480 | $7,567,301 | $8,252,154 | $658,925 | $672,969 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $12,182 | $3,844 | $107,447 | $1,138,553 | $142,248 | $14,174 | $51,455 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $7,879 | | $703 | $2,429 | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $952,658 | $2,740,004 | $2,688,319 | $3,608,270 | $2,899,250 | $2,725,383 | $2,026,238 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $597,173 | $1,784,231 | $6,686,966 | $6,552,112 | $2,996,244 | $584,002 | $659,670 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $743,365 | $2,564,374 | $502,364 | $154,854 | $119,333 | $277,429 | $287,973 |
| Total | $2,430,415 | $9,528,942 | $10,889,951 | $19,021,793 | $717,160,952 | $492,733,556 | $410,358,833 |
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