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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $36,885,940 | $42,107,640 | $12,603,098 | $73,518,240 | $9,537,048 | $12,889,684 | $21,135,703 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $4,851 | | | | | $193,272 | |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $56,530,821 | $78,354,427 | $163,031,297 | $180,721,601 | $116,714,483 | $97,714,160 | $110,129,639 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $990,539 | $351,494 | $983,822 | $1,580,110 | $887,302 | $820,362 | $236,549 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $41,250 | $550 | $1,284,091 | $311,170 | $4,970 | $1,115 | $54,452 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $75,117,503 | $123,866,636 | $164,791,038 | $234,387,016 | $106,392,534 | $143,650,440 | $160,895,207 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $287,939 | $195,081 | $2,166,140 | $79,770 | $60,291 | $194,739 | $101,603 |
| Total | $169,858,843 | $244,875,828 | $344,859,486 | $490,597,907 | $233,596,628 | $255,463,772 | $292,553,153 |
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