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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $419,213,166 | $408,766,793 | $381,750,386 | $409,233,158 | $212,414,576 | $88,612,877 | $154,000,101 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,964,026 | $3,489,618 | $28,684,305 | $6,400,638 | $9,080,591 | $43,935,869 | $141,013,909 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $36,394,266 | $9,098,456 | $18,319,013 | $39,443,085 | $13,876,161 | $23,522,200 | $14,698,501 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $1,794,012 | $6,425,570 | $9,971,117 | $19,915,840 | $8,604,364 | $4,094,647 | $3,544,887 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $34,392,517 | $94,190,556 | $136,842,824 | $293,208,447 | $240,187,103 | $209,945,573 | $231,787,499 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,064,966 | $2,400,381 | $1,198,390 | $4,552,954 | $3,519,120 | $2,885,585 | $3,247,272 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $8,372,417 | $14,600,188 | $15,807,474 | $15,512,387 | $10,238,975 | $8,028,543 | $26,380,174 |
| Total | $504,195,370 | $538,971,562 | $592,573,509 | $788,266,509 | $497,920,890 | $381,025,294 | $574,672,343 |
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