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| Commodity | 2005 | 2006 | 2007 | 2009 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | $1,794,032 | $2,459,444 | $2,603,776 | $3,103,565 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | $1,795,109 | $806,227 | $576,560 | $982,698 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $47,161 | $27,236 | $122,987 | $12,626 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $10,922,581 | $11,324,780 | $16,011,071 | $14,471,022 |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $500,579 | $640,613 | $675,684 | $104,470 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | $90,513 | $159,427 | $207,749 | $33,059 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | $1,189,656 | $1,221,554 | $1,385,511 | $3,208,929 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $330,570 | $364,203 | $836,116 | $478,018 |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $1,341,089 | $1,760,137 | $2,063,122 | $876,224 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $2,412,510 | $2,985,991 | $2,698,892 | $2,887,232 |
| Total | $20,423,800 | $21,749,612 | $27,181,468 | $26,157,843 |
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