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| Commodity | 2007 | 2008 | 2009 | 2010 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | | | | $218,016 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $521,388 | $1,795,096 | $415,280 | $402,517 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | | | | $42,502 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | | | $52,628 | |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | | | $2,687 | |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | | $57,488 | $71,729 | |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | | | | $47,730 |
| Total | $521,388 | $1,852,584 | $542,324 | $710,765 |
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