Commodity2005200620072008200920102011
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...  $93,167 $25,946$5,120 
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... $32,725$884,314$1,342,163$1,285,157$224,826$38,287
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$62 $264$163$316$304 
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ...     $1,465 
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$8,559$8,414$43,541$41,515$1,063,390$1,136,004$2,299,559
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$141,417$558$17,950$47,364$383$20,385 
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ...$8,422$23,833$21,836$124,462$128,187$16,603$14,412
Total$158,460$65,530$1,061,072$1,555,667$2,503,379$1,404,707$2,352,258