Commodity2005200620072008
Saturated acyclic hydrocarbons$285$206 $140
Ethylene $364  
Butene (butylene) & isomers thereof$1,048 $44 
Unsaturated acyclic hydrocarbons (excl. of 2901.21-2901.24)$2,337$2,283 $228
Total$3,670$2,853$44$368