Commodity200520062007200820092010
Artificial guts (sausage casings) of hardened protein/of cellulosic mats    $1,236$35
Tubes, pipes & hoses, rigid, of polymers of ethylene$358,683$298,401$214,966$371,444$464,331$562,890
Tubes, pipes & hoses, rigid, of polymers of propylene$1     
Tubes, pipes & hoses, rigid, of polymers of vinyl chloride$995 $300 $7,044 
Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17$28,690$24,741$60$1,350 $2,774
Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ...$4,606$26,536$19,830$419$791 
Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ...$31,544$50,861$29,554$232$4,208$24,267
Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ...$280$210$1,186$116$143 
Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33)$72,310 $100$621$1,323 
Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ...$78,831$144,303$42,328$39,953$101,561$64,831
Total$575,940$545,052$308,324$414,135$580,637$654,797