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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | $2,246 | $12,633 | $1,002 | $1,373 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | $67,788 | $126,933 | $53,821 | $28,983 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $104,908 | $906 | $8,082 | $2,206 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $161,297 | $227,128 | $310,063 | $465,958 |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $88,272 | $106,819 | $173,747 | $284,341 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | $11,495 | $69,817 | $58,665 | $46,350 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | $692,618 | $837,097 | $1,085,427 | $1,102,477 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $276,756 | $35,560 | $23,293 | $45,558 |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $27,471 | $142,669 | $20,974 | $15,006 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $301,078 | $449,178 | $527,174 | $718,847 |
| Total | $1,733,929 | $2,008,740 | $2,262,248 | $2,711,099 |
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