Commodity20062007
Hydrogen fluoride (hydrofluoric acid)$1,510$1,839
Inorganic acids other than hydrogen fluoride$1,627$1,199
Carbon dioxide$3,451$2,457
Silicon dioxide$133 
Inorganic oxygen comps. of non-metals other than inorganic acids/carbon dio ...$2,403$447
Total$9,124$5,942