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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $7,064,630 | $16,230,919 | $23,034,560 | $10,060,182 | $7,448,653 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,640,044 | $508,999 | $4,597,969 | $19,674,860 | $2,097,045 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $19,076,761 | $1,137,601 | $6,368,553 | $11,806,846 | $6,006,371 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $908,269 | $760,145 | $2,982,672 | $19,548,189 | $3,136,776 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $378,107 | $626,624 | $3,653,847 | $2,873,459 | $2,201,415 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $572,127 | $1,224,463 | $4,806,919 | $1,799,664 | $3,111,663 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $10,092,516 | $13,401,464 | $42,017,951 | $11,764,298 | $24,537,598 |
| Total | $40,732,454 | $33,890,215 | $87,462,471 | $77,527,498 | $48,539,521 |
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