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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 ... | $10,129,441 | $4,817,326 | $4,707,623 | $13,279,594 | $8,582,732 | $8,193,198 | $5,533,648 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $3,306,216 | $3,178,729 | $3,097,501 | $690,517 | $140,934 | $107,183 | $227,947 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $16,803,548 | $19,978,265 | $20,022,624 | $35,290,852 | $10,244,985 | $10,952,358 | $12,742,950 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $5,231,078 | $6,456,001 | $7,495,889 | $10,281,516 | $4,176,966 | $4,988,060 | $6,500,300 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $126,469 | $172,327 | $619,501 | $936,596 | $197,244 | $289,348 | $438,559 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $34,118,855 | $30,815,535 | $35,771,966 | $46,808,669 | $23,369,184 | $26,527,491 | $30,891,664 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $245,460 | $302,559 | $1,399,920 | $356,968 | $458,235 | $564,125 | $560,064 |
| Total | $69,961,067 | $65,720,742 | $73,115,024 | $107,644,712 | $47,170,280 | $51,621,763 | $56,895,132 |
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