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| Commodity | 2005 | 2006 | 2007 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | | $1,925 | |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $3,675 | | |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | | $3,100 | |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | | $93 | $17,285 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | | $867 | $100 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | | $77 | $24 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | | $384 | |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $1,576 | $508 | $155 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | | $91 | |
| Total | $5,251 | $7,045 | $17,564 |
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