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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 ... | $19,003,245 | $14,952,137 | $77,370,023 | $56,135,108 | $34,245,063 | $47,148,517 | $30,014,764 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $22,116 | $93,011 | $20,503,725 | $6,309,050 | $1,020,547 | $3,941,850 | $4,688,277 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $6,845,893 | $7,960,245 | $19,674,174 | $15,774,248 | $39,492,348 | $12,082,040 | $10,397,981 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $6,310,040 | $12,400,743 | $14,644,221 | $24,018,268 | $14,144,371 | $15,219,739 | $14,256,509 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $364,301 | $392,861 | $2,619,387 | $1,486,549 | $4,362,907 | $2,099,550 | $1,497,008 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $5,381,656 | $6,590,080 | $9,127,912 | $5,446,954 | $3,552,572 | $3,823,139 | $5,081,203 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $15,436,704 | $20,084,769 | $32,597,881 | $21,530,125 | $32,279,236 | $68,328,278 | $50,881,532 |
| Total | $53,363,955 | $62,473,846 | $176,537,323 | $130,700,302 | $129,097,044 | $152,643,113 | $116,817,274 |
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