Commodity2005200620092010
Polystyrene, expansible, in primary forms $4,165$13,243 
Polystyrene other than expansible, in primary forms$3,859$8,127$10,292 
Styrene-acrylonitrile (SAN) copolymers, in primary forms   $104
Polymers of styrene, in primary forms (excl. of 3903.11-3903.30)$330$2,747  
Total$4,189$15,039$23,535$104