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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $4,057,054 | $674,464 | $8,807,435 | $15,964,910 | $31,455,185 | $7,343,378 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $7,194,001 | $989,239 | $3,902,554 | $3,278,203 | $7,996,440 | $542,352 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $2,133,992 | $1,456,840 | $5,295,364 | $10,438,077 | $3,157,686 | $5,549,295 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $1,417,157 | $7,763,553 | $3,613,273 | $4,619,487 | $2,654,732 | $3,188,727 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $877,820 | $1,294,408 | $1,310,417 | $1,512,671 | $1,994,150 | $3,551,202 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $2,607,335 | $2,820,751 | $4,244,807 | $4,743,596 | $3,121,368 | $2,250,528 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $4,784,953 | $8,549,915 | $9,603,553 | $14,071,477 | $11,478,399 | $4,232,544 |
| Total | $23,072,312 | $23,549,170 | $36,777,403 | $54,628,421 | $61,857,960 | $26,658,026 |
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