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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 ... | $4,445,749 | $4,788,069 | $4,763,915 | $5,349,886 | $5,612,685 | $2,956,509 | $9,235,002 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $6,093,481 | $8,331,902 | $11,117,213 | $5,574,215 | $407,749 | $1,455,433 | $3,236,269 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $4,785,840 | $4,384,041 | $9,204,931 | $5,287,695 | $7,460,004 | $15,332,590 | $25,508,290 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $4,614,225 | $4,366,454 | $5,718,894 | $12,047,781 | $6,490,873 | $7,567,286 | $12,472,756 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,577,140 | $4,926,936 | $1,982,267 | $2,407,032 | $1,806,279 | $2,091,252 | $12,979,293 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $396,630 | $1,172,313 | $2,369,455 | $4,107,998 | $4,658,225 | $14,883,474 | $25,199,582 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $7,542,083 | $11,520,403 | $8,435,205 | $9,228,222 | $5,572,380 | $21,030,411 | $48,995,405 |
| Total | $30,455,148 | $39,490,118 | $43,591,880 | $44,002,829 | $32,008,195 | $65,316,955 | $137,626,597 |
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