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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 ... | $14,885,245 | $27,651,943 | $4,568,575 | $4,050,050 | $1,830,669 | $1,418,456 | $2,871,612 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $231,397 | $130,953 | $2,138,454 | $1,691,817 | $3,605,686 | $4,534,151 | $9,824,438 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $39,384,768 | $53,565,370 | $118,392,784 | $106,768,682 | $68,140,510 | $77,502,279 | $105,855,016 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $23,808,063 | $28,606,457 | $50,812,773 | $100,928,533 | $68,480,811 | $51,765,968 | $57,931,752 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $1,483,730 | $3,233,582 | $7,570,900 | $8,818,159 | $2,553,989 | $16,488,737 | $4,375,000 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $18,035,743 | $37,413,776 | $65,708,052 | $75,530,736 | $58,796,664 | $83,715,343 | $97,907,310 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $4,486,160 | $3,705,708 | $8,516,106 | $11,469,840 | $7,297,465 | $14,704,606 | $14,888,320 |
| Total | $102,315,106 | $154,307,789 | $257,707,644 | $309,257,817 | $210,705,794 | $250,129,540 | $293,653,448 |
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