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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Polystyrene, expansible, in primary forms | $4 | | | $15,948 | | |
| Polystyrene other than expansible, in primary forms | $57 | $100 | $131,561 | $183 | $21 | $160 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | $2 | $3 | | | | |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | $53 | | | | | |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $41,364 | $1,576 | $2,752 | | $1,573 | $716 |
| Total | $41,480 | $1,679 | $134,313 | $16,131 | $1,594 | $876 |
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