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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 ... | $4,449,907 | $6,312,795 | $4,077,666 | $1,421,738 | $5,188,721 | $2,521,352 | $7,413,150 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $727,860 | $7,821,138 | $3,627,895 | $1,458,600 | $629,673 | $3,986,740 | $1,188,006 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $1,098,715 | $3,933,864 | $1,117,953 | $4,242,873 | $1,857,545 | $1,733,124 | $3,789,374 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $210,157 | $624,936 | $112,534 | $521,624 | $115,778 | $6,624,338 | $14,479 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $27,841,972 | $30,544,048 | $35,315,149 | $37,435,956 | $59,034,277 | $18,588,765 | $9,952,333 |
| Total | $34,328,611 | $49,236,781 | $44,251,197 | $45,080,791 | $66,825,994 | $33,454,319 | $22,357,342 |
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