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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 ... | $35,560,618 | $16,207,234 | $27,862,598 | $95,840,479 | $21,045,050 | $16,156,212 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,976 | $9,253 | $194,217 | $250,504 | $79,128 | $184,763 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $127,178,488 | $130,657,701 | $168,136,966 | $139,263,258 | $74,676,144 | $85,024,758 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $105,087,136 | $138,966,711 | $164,714,623 | $141,116,490 | $78,236,532 | $92,475,221 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $7,037,234 | $10,208,403 | $9,613,160 | $7,483,451 | $3,971,668 | $5,147,175 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $173,290,553 | $242,516,217 | $273,676,480 | $255,810,655 | $106,637,815 | $130,895,396 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $12,088,092 | $14,278,554 | $13,957,012 | $42,658,849 | $21,746,240 | $11,765,929 |
| Total | $460,245,097 | $552,844,073 | $658,155,056 | $682,423,686 | $306,392,577 | $341,649,454 |
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