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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 ... | $15,409,837 | $20,814,971 | $43,441,060 | $38,948,423 | $114,796,145 | $21,810,459 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $369,160 | $7,980,985 | $117,561,222 | $6,384,685 | $17,782,393 | $8,546,923 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $973,716 | $18,582,490 | $7,245,138 | $12,517,689 | $2,525,777 | $3,611,914 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $6,344,444 | $19,896,211 | $16,201,325 | $53,681,624 | $7,743,254 | $9,518,868 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $1,778,031 | $327,857 | $4,975,518 | $2,473,752 | $8,287,221 | $2,731,210 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $12,523,320 | $7,702,231 | $3,433,079 | $6,505,613 | $5,453,885 | $4,961,573 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $4,606,153 | $37,855,640 | $27,352,445 | $60,734,449 | $87,606,279 | $29,871,751 |
| Total | $42,004,661 | $113,160,385 | $220,209,787 | $181,246,235 | $244,194,954 | $81,052,698 |
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