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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 ... | $8,565,686 | $4,344,487 | $10,309,560 | $7,216,541 | $55,478,881 | $14,153,762 | $44,250,223 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $12,978,270 | $3,998,826 | $14,099,079 | $16,482,258 | $7,164,006 | $4,734,355 | $9,099,363 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $12,715,308 | $5,463,542 | $7,102,341 | $20,313,917 | $74,589,471 | $110,740,878 | $3,045,920 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $9,647 | $1,787,225 | $625,064 | $661,306 | $1,023,483 | $1,005,797 | $738,142 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $12,792,889 | $30,562,105 | $34,694,926 | $35,022,833 | $16,411,641 | $13,215,692 | $57,763,037 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,185,606 | $1,610,797 | $3,782,071 | $3,451,053 | $9,950,937 | $5,545,517 | $1,910,175 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $4,272,572 | $2,590,792 | $3,655,843 | $8,008,061 | $8,494,245 | $5,804,911 | $1,448,529 |
| Total | $53,519,978 | $50,357,774 | $74,268,884 | $91,155,969 | $173,112,664 | $155,200,912 | $118,255,389 |
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