Commodity2005200620072008
Polystyrene, expansible, in primary forms$582$256$977$1,206
Polystyrene other than expansible, in primary forms$349$5,783$8,520$356
Polymers of styrene, in primary forms (excl. of 3903.11-3903.30)$1,588$293$2,730$764
Total$2,519$6,332$12,227$2,326