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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 ... | $360,249,840 | $361,272,998 | $868,540,782 | $1,621,661,553 | $1,163,399,058 | $2,258,548,188 | $800,947,682 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $16,184,784 | $25,681,125 | $7,082,707 | $4,689,822 | $1,699,306 | $567,223 | $4,677,847 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $15,945,058 | $241,780,446 | $107,366,556 | $17,945,861 | $10,687,907 | $242,232,800 | $112,193,384 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $5,843,158 | $3,953,028 | $956,757 | $4,721,300 | $366,419 | $1,222 | $211,702 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $889,179 | $955,132 | $291,401 | $59,815,030 | $374,835 | $890,749 | $437,203 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $49,661 | $711,857 | $791,583 | $130,534 | $33,485 | $54,656 | $463,371 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $44,433,076 | $6,777,165 | $6,914,736 | $6,751,382 | $2,457,275 | $2,530,116 | $2,924,704 |
| Total | $443,594,756 | $641,131,751 | $991,944,522 | $1,715,715,482 | $1,179,018,285 | $2,504,824,954 | $921,855,893 |
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