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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 ... | | | | | $330,688 | $3,084 | $69,443 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | | | $18,939 | $159,183 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | | $1,389,367 | $557,171 | $2,889,239 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | | $2,859 | | |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $2,190,598 | $2,936,297 | $3,484,256 | $4,748,929 | $1,599,975 | $1,928,473 | $1,731,173 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $41,161,698 | $49,424,219 | $78,939,783 | $121,007,627 | $64,640,906 | $58,258,903 | $65,552,423 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | | $995 | $155,875 | | $42 | $6,143 | $335,939 |
| Total | $43,352,296 | $52,361,511 | $82,579,914 | $125,756,556 | $67,963,837 | $60,772,713 | $70,737,400 |
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