Commodity2005200620072008200920102011
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$5,656$58,305 $101,029$113,541  
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...  $20,004$9,351 $3,430 
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... $3,284$21,915$48,758$6,799$4,168$5,488
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ...$250 $23,969 $9,854$35,022$24,191
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...     $14,992 
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$307    $5,155 
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ...   $104,842$8,130 $7,737
Total$6,213$61,589$65,888$263,980$138,324$62,767$37,416