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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Polystyrene, expansible, in primary forms | | $67,668 | $199,837 | $86,127 | $11,593 | | $3,734 |
| Polystyrene other than expansible, in primary forms | | $92,757 | $206,007 | $91,888 | $28,113 | $14,666 | $16,637 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | | | $19,920 | | | | |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $15,286 | $108,789 | $3,899 | $12,993 | $9,524 | $1,089 | $6,655 |
| Total | $15,286 | $269,214 | $429,663 | $191,008 | $49,230 | $15,755 | $27,026 |
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