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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 ... | $140,781,035 | $234,899,322 | $277,888,136 | $431,610,161 | $301,184,827 | $245,509,754 | $382,802,264 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,433,367 | $193,322 | $11,147,745 | $3,835,302 | $6,954,961 | $1,711,299 | $82,087 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,621,248 | $852,376 | $994,844 | $477,938 | $3,713,666 | $201,485 | $96,000 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $211,521 | $2,014,822 | $964,656 | $40,671,905 | $107,707,423 | $89,975,086 | $202,653,311 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $5,443,560 | $6,436,131 | $94,324,959 | $219,745,116 | $38,028,605 | $39,484,477 | $8,116,873 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $4,871,208 | $5,061,533 | $3,987,610 | $5,617,243 | $8,240,087 | $5,023,875 | $10,529,396 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $2,512,125 | $2,583,491 | $2,675,788 | $4,093,448 | $8,626,319 | $46,516,577 | $1,195,131 |
| Total | $156,874,064 | $252,040,997 | $391,983,738 | $706,051,113 | $474,455,888 | $428,422,553 | $605,475,062 |
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