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| Commodity | 2005 | 2006 | 2007 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | $2,514 | $7,309 | $764 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | $27,353 | $22,760 | $13,847 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $3,864 | $865 | $416 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $3,795 | $1,708 | $2,055 |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $26,674 | $9,240 | $10,259 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | $4,834 | $228 | $382 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | $13 | $3,695 | $508 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $27 | $1,212 | $144 |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $4,968 | $19,279 | $4,335 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $774 | $27,917 | $8,258 |
| Total | $74,816 | $94,213 | $40,968 |
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