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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 ... | $163,043 | | $78,254 | $164,457 | $131,036 | $169,046 | $860,900 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $156,933 | $15,106,081 | $284,636 | $495,502 | $594,421 | $153,698 | $1,360,556 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $16,122,041 | $792,839 | $3,258,793 | $3,433,405 | $20,361,821 | $59,744,411 | $195,090 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $12,844 | $19,136 | $17,702 | $12,308 | $25,078 | | $950 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,345,933 | $304,675 | $466,644 | $695,421 | $1,927,111 | $498,573 | $3,406,475 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $784,669 | $3,300,846 | $891,870 | $6,897,680 | $1,549,555 | $448,175 | $632,495 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $225,735 | $837,655 | $183,406 | $382,809 | $6,816,578 | $7,745,145 | $1,187,195 |
| Total | $19,811,198 | $20,361,232 | $5,181,305 | $12,081,582 | $31,405,600 | $68,759,048 | $7,643,661 |
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