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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | | $108 | $51 | | |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | | $11,046 | $1,774 | $10 | $167 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $370 | | | | |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $6 | $1,103 | $681 | | $84 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | | $338 | | $746 | |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $776 | | | | |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | | $3,575 | $433 | | |
| Total | $1,152 | $16,170 | $2,939 | $756 | $251 |
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