Commodity2005200620072008200920102011
Saturated acyclic hydrocarbons$19,200 $169 $329 $1,048
Propene (propylene)  $58  $6,325$6,668
Butene (butylene) & isomers thereof$2,254  $2,454   
Unsaturated acyclic hydrocarbons (excl. of 2901.21-2901.24)$4,861$1,619$5,300$3,778$4,956$3,074$2,065
Total$26,315$1,619$5,527$6,232$5,285$9,399$9,781