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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 ... | $4,419,549 | $5,067,810 | $8,084,997 | $15,097,815 | $8,868,062 | $6,935,334 | $7,003,829 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $7,281,306 | $900,079 | $5,675,415 | $9,465,821 | $896,115 | $499,736 | $1,559,653 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $147,905,566 | $160,539,225 | $197,582,934 | $195,806,930 | $127,556,710 | $151,059,575 | $160,040,422 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $142,199,471 | $159,084,285 | $232,067,667 | $226,287,257 | $117,538,287 | $115,509,362 | $164,939,207 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $8,860,249 | $14,151,454 | $21,856,386 | $23,600,385 | $3,506,656 | $6,004,790 | $3,958,263 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $138,998,036 | $187,077,124 | $224,081,469 | $213,174,948 | $85,405,978 | $139,120,250 | $190,567,044 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $28,473,240 | $26,747,541 | $27,081,719 | $25,124,180 | $21,972,175 | $16,026,029 | $19,553,400 |
| Total | $478,137,417 | $553,567,518 | $716,430,587 | $708,557,336 | $365,743,983 | $435,155,076 | $547,621,818 |
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