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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | $54,132 | $6,691 | $73,791 | $26,401 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | $47,860 | $54,913 | $81,441 | $185,086 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $135 | $11,447 | $2,934 | $3,985 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $417,139 | $452,320 | $870,440 | $1,173,650 |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $390,147 | $538,339 | $1,575,550 | $1,464,735 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | $79,529 | $137,937 | $140,204 | $122,763 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | $73,746 | $17,486 | $82,074 | $157,410 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $151,109 | $107,558 | $74,520 | $119,950 |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $435,129 | $327,886 | $747,760 | $754,174 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $804,529 | $651,976 | $1,767,341 | $2,117,270 |
| Total | $2,453,455 | $2,306,553 | $5,416,055 | $6,125,424 |
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