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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 ... | $24,049,510 | $63,985,745 | $24,867,599 | $105,612,560 | $37,036,386 | $68,649,460 | $44,283,616 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $43,075,495 | $45,482,937 | $92,597,689 | $43,260,484 | $27,376,545 | $24,629,446 | $54,294,910 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $81,517,328 | $70,542,397 | $92,626,206 | $113,850,596 | $67,904,984 | $94,537,323 | $134,048,779 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $31,105,101 | $31,453,157 | $43,657,567 | $48,286,625 | $30,599,908 | $28,993,312 | $37,424,004 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $5,477,623 | $3,034,886 | $5,790,846 | $10,879,975 | $9,596,221 | $4,176,370 | $32,152,584 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $158,586,583 | $193,756,145 | $245,669,888 | $274,437,207 | $121,889,463 | $156,041,747 | $216,529,809 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $24,912,700 | $49,182,956 | $40,447,145 | $42,417,087 | $34,786,811 | $28,238,671 | $36,173,363 |
| Total | $368,724,340 | $457,438,223 | $545,656,940 | $638,744,534 | $329,190,318 | $405,266,329 | $554,907,065 |
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