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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 ... | $3,878,970 | $23,310,022 | $6,490,670 | $15,797,989 | $26,224,921 | $8,372,625 | $12,298,956 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,683,171 | $1,587,950 | $3,264,651 | $5,871,805 | $4,397,376 | $2,363,246 | $5,209,647 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $20,396,589 | $19,741,871 | $35,314,361 | $44,025,635 | $28,725,958 | $50,162,948 | $32,864,403 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $17,477,678 | $18,143,773 | $38,096,618 | $56,230,047 | $39,885,008 | $56,130,815 | $81,500,384 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,598,599 | $3,492,833 | $7,503,315 | $8,919,099 | $8,856,387 | $10,801,582 | $20,252,467 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $4,233,316 | $5,400,088 | $12,278,993 | $13,566,613 | $8,723,371 | $19,436,666 | $21,320,852 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $8,341,443 | $11,445,602 | $15,742,089 | $20,304,400 | $21,908,077 | $17,908,782 | $38,439,025 |
| Total | $59,609,766 | $83,122,139 | $118,690,697 | $164,715,588 | $138,721,098 | $165,176,664 | $211,885,734 |
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