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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 ... | $435,801 | $167,206 | $1,687,851 | $2,309,839 | $2,826,297 | $4,862,282 | $811,058 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $985,229 | $428,939 | $212,479 | $459,722 | $353 | $663,706 | $22,516,401 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $26,740 | $281,914 | $31,184,695 | $31,910,170 | $17,110 | $12,245 | $280,143 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | $9,310 | | $74,798 | | | $67,441 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $682,306 | $1,348,674 | $1,538,986 | $353,379 | $4,777,386 | $2,760,595 | $247,763 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $665,790 | $2,173,551 | $625,587 | $378,933 | $266,151 | $6,134,192 | $4,739,268 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,639,851 | $1,817,489 | $2,146,729 | $4,070,874 | $6,065,713 | $2,490,923 | $4,673,105 |
| Total | $6,435,717 | $6,227,083 | $37,396,327 | $39,557,715 | $13,953,010 | $16,923,943 | $33,335,179 |
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