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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $79,623,858 | $76,888,537 | $18,884,732 | $55,142,413 | $78,035,849 | $29,637,368 | $11,593,598 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $10,912,987 | $11,861,975 | $5,643,832 | $11,108,493 | $6,803,225 | $11,389,165 | $10,833,210 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $35,531,150 | $23,586,729 | $21,789,876 | $40,947,121 | $23,414,519 | $40,992,332 | $49,283,332 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $8,632,566 | $10,487,538 | $27,491,160 | $34,226,589 | $22,813,515 | $23,892,859 | $30,117,441 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $1,117,516 | $1,056,244 | $1,207,884 | $16,049,080 | $53,297,215 | $27,085,502 | $13,188,540 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $5,091,527 | $3,012,734 | $3,915,649 | $5,071,002 | $10,256,095 | $8,151,656 | $7,045,058 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $12,809,387 | $81,430,286 | $22,017,024 | $58,839,568 | $50,461,837 | $101,266,506 | $39,295,686 |
| Total | $153,718,991 | $208,324,043 | $100,950,157 | $221,384,266 | $245,082,255 | $242,415,388 | $161,356,865 |
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