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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Polystyrene, expansible, in primary forms | | | $233 | $32,820 | $1,770 | |
| Polystyrene other than expansible, in primary forms | $20 | $38,346 | $387 | $71,128 | $10,730 | $40,643 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | | | $44,374 | $29,602 | $4,277 | $717 |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | | | | | | $18,668 |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $70,507 | $1,123 | $171 | $397,353 | | $454,586 |
| Total | $70,527 | $39,469 | $45,165 | $530,903 | $16,777 | $514,614 |
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