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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 ... | $453,133,299 | $590,357,831 | $561,577,810 | $658,514,340 | $631,212,640 | $295,313,577 | $660,932,964 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $14,949,005 | $46,368,223 | $31,036,516 | $51,825,800 | $13,074,078 | $5,701,350 | $9,439,885 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $44,503 | $464,977 | $540,020 | $70,600 | $84,218 | | |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | $731,680 | | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $3,327,264 | $5,103,773 | $44,857,272 | $45,903,320 | $26,252,672 | $32,253,769 | $56,321,448 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $958,938 | $3,904,635 | $7,134,799 | $4,228,450 | $4,128,162 | $2,292,483 | $1,264,442 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | | $56,529 | $37 | $39,820 | $224,221 | $35,871 | |
| Total | $472,413,009 | $646,255,968 | $645,146,454 | $761,314,010 | $674,975,991 | $335,597,050 | $727,958,739 |
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