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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 ... | $283,082,669 | $789,617,030 | $1,132,529,305 | $203,543,056 | $79,993,950 | $908,448,122 | $1,211,869,581 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $5,171,272 | $35,153,568 | $9,242,716 | $2,404,211 | $527,064 | $6,020,869 | $4,643,353 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $4,667,949 | $113,155 | $202,200 | | $384 | | |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $1,326,453 | $1,585,200 | $3,019,452 | $3,425,883 | $2,617,631 | $2,282,569 | $1,228,742 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $8,604,346 | $10,877,681 | $29,734,984 | $28,343,057 | $21,120,140 | $56,829,046 | $79,993,163 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,562,930 | $504,699 | $2,257,491 | $3,844,647 | $6,968,371 | $6,370,598 | $9,986,376 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $165,233 | $76,150 | $287,651 | $14,949 | $279,450 | $497,256 | $49,919 |
| Total | $305,580,852 | $837,927,483 | $1,177,273,799 | $241,575,803 | $111,506,990 | $980,448,460 | $1,307,771,134 |
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