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| Commodity | 2005 | 2006 | 2007 |
| Polystyrene, expansible, in primary forms | $303,416 | $312,318 | $596,679 |
| Polystyrene other than expansible, in primary forms | $328,715 | $223,637 | $531,572 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | | $23,570 | |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | | $4,385 | |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $32,200 | $44,250 | $158,631 |
| Total | $664,331 | $608,160 | $1,286,882 |
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