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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 ... | $4,072,620 | $6,239,044 | $4,824,114 | $7,804,277 | $6,386,867 | $12,238,940 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,676,993 | $3,659,728 | $5,001,321 | $6,014,867 | $387,239 | $397,099 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $183,369,404 | $191,540,053 | $202,384,356 | $269,258,521 | $173,996,253 | $256,013,285 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $24,385,080 | $36,442,622 | $49,757,995 | $51,343,425 | $34,902,759 | $37,835,256 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $728,869 | $892,876 | $1,658,181 | $7,768,549 | $8,690,728 | $1,502,016 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $106,014,146 | $112,363,538 | $128,643,767 | $169,163,852 | $106,163,971 | $123,752,515 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $18,351,228 | $31,650,007 | $27,663,961 | $31,809,225 | $21,796,484 | $26,937,079 |
| Total | $339,598,340 | $382,787,868 | $419,933,695 | $543,162,716 | $352,324,301 | $458,676,190 |
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