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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Polystyrene, expansible, in primary forms | $1,890,783 | $2,788,569 | $2,673,261 | $2,380,118 | $1,699,561 | $1,356,488 |
| Polystyrene other than expansible, in primary forms | $343,953 | $85,760 | $112,259 | $1,303 | $84,780 | $986 |
| Styrene-acrylonitrile (SAN) copolymers, in primary forms | $156,221 | $216,002 | | | | $36,987 |
| Acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms | $23,926 | $4,542 | | | | |
| Polymers of styrene, in primary forms (excl. of 3903.11-3903.30) | $1,148,775 | $850,067 | $1,462,679 | $1,396,734 | $496,876 | $995,147 |
| Total | $3,563,658 | $3,944,940 | $4,248,199 | $3,778,155 | $2,281,217 | $2,389,608 |
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