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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 ... | $104,935 | $4,187,608 | $234,936 | $101,035,995 | $1,059,004 | $3,416,534 | $262,149,594 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $207,054 | $537,438 | $9,965,549 | $17,520,452 | $40,459,234 | $27,925,167 | $17,250,949 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,234,312 | $603,518 | $14,792,362 | $6,154,129 | $4,804,371 | $12,763,074 | $19,511,671 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $2,448,355 | $2,175,009 | $660,569 | $4,592,651 | $47,495 | $1,646,621 | $2,127,485 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $56,278 | $54,198 | $107,259 | $1,622,797 | $2,993,987 | $758,554 | $877,833 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $129 | $505,747 | $28,509 | $269,696 | $829,583 | $179,430 | $2,097,197 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $558,445 | $592,851 | $229,217 | $1,637,230 | $187,451 | $3,050,931 | $60,548 |
| Total | $4,609,508 | $8,656,369 | $26,018,401 | $132,832,950 | $50,381,125 | $49,740,311 | $304,075,277 |
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