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| Commodity | 2005 | 2006 | 2007 | 2009 | 2011 |
| Polystyrene, expansible, in primary forms | | | $16,639 | $43,718 | $84,991 |
| Polystyrene other than expansible, in primary forms | $236,069 | $65,476 | $55,943 | $86,451 | $32,242 |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | | | | $10,503 | $7,882 |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | | | $2,407 | $411,473 | $689,645 |
| Total | $236,069 | $65,476 | $74,989 | $552,145 | $814,760 |
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