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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 ... | $40,374,782 | $32,308,657 | $43,053,753 | $8,728,468 | $3,482,373 | $5,351,299 | $7,316,163 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $1,548,762 | $2,185,377 | $4,981,946 | $1,629,902 | $6,566,829 | $1,969,654 | $1,424,858 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $455,458 | $6,001,521 | $1,097,642 | $4,795,453 | $3,004,538 | $54,580,012 | $2,078,344 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | $9,664,746 | $5,469,314 | $11,452,774 | $2,899,638 | $489,827 | $9,186 | $166,092 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $33,327,725 | $20,494,001 | $14,389,135 | $38,126,531 | $30,037,712 | $22,658,100 | $11,853,417 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $7,528,512 | $3,623,947 | $20,969,980 | $36,378,404 | $16,311,333 | $6,437,068 | $3,695,538 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $3,308,063 | $625,534 | $1,078,022 | $1,649,170 | $432,598 | $714,784 | $528,235 |
| Total | $96,208,048 | $70,708,351 | $97,023,252 | $94,207,566 | $60,325,210 | $91,720,103 | $27,062,647 |
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