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| Commodity | 2005 | 2006 | 2007 | 2009 |
| Polystyrene, expansible, in primary forms | $584,761 | $840,900 | $734,846 | $1,126 |
| Polystyrene other than expansible, in primary forms | $2,282,311 | $3,379,591 | $3,705,916 | $1,382,980 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | $533 | $6,512 | $3,289 | |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | | | $9,117 | $2,184 |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $1,889,646 | $2,074,624 | $2,685,976 | $2,655,534 |
| Total | $4,757,251 | $6,301,627 | $7,139,144 | $4,041,824 |
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