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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 ... | $5,097,144 | $5,902,141 | $5,459,273 | $10,014,341 | $5,884,016 | $8,460,336 | $8,203,539 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $199,466 | $209,703 | $472,619 | $214,297 | $54,510 | $53,962 | $131,278 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $55,757,286 | $64,046,789 | $82,311,077 | $87,066,686 | $55,220,748 | $62,551,812 | $75,480,824 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $73,249,654 | $96,432,093 | $123,501,590 | $120,139,057 | $66,218,347 | $74,875,805 | $99,817,552 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,685,217 | $2,991,577 | $5,436,565 | $4,588,112 | $1,402,527 | $2,660,483 | $5,833,216 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $50,669,059 | $72,286,418 | $67,875,386 | $83,419,660 | $53,497,749 | $68,911,668 | $79,891,349 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $7,032,445 | $8,944,039 | $13,432,047 | $13,103,204 | $9,921,120 | $10,608,026 | $10,769,258 |
| Total | $194,690,271 | $250,812,760 | $298,488,557 | $318,545,357 | $192,199,017 | $228,122,092 | $280,127,016 |
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