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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 ... | $27,838,142 | $52,431,639 | $51,923,136 | $66,021,944 | $39,089,857 | $44,156,504 | $58,761,740 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $445,569 | $814,422 | $3,436,411 | $4,550,279 | $4,334,485 | $5,274,962 | $1,214,929 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $58,368,041 | $33,545,844 | $41,437,311 | $44,941,104 | $18,326,837 | $9,155,750 | $10,034,062 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $13,602,969 | $15,128,399 | $30,355,100 | $30,274,418 | $15,062,515 | $16,899,504 | $24,970,659 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $233,778 | $312,896 | $962,805 | $2,129,048 | $342,346 | $397,573 | $4,232,582 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $11,186,053 | $20,127,585 | $24,156,392 | $18,478,502 | $12,818,027 | $16,799,623 | $21,234,422 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $10,619,585 | $5,381,355 | $11,212,248 | $12,753,437 | $5,550,415 | $7,430,052 | $9,143,476 |
| Total | $122,294,137 | $127,742,140 | $163,483,403 | $179,148,732 | $95,524,482 | $100,113,968 | $129,591,870 |
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