Commodity2005200620072008200920102011
Tetrahydrofuran  $1,343    
Heterocyclic comps. cont. an unfused furan ring (whether or not hydrogenate ...  $56,648    
Lactones (excl. coumarin, methylcoumarins & ethylcoumarins)$15,689$11,660$1,563$11,966$8,009$46,926$22,245
Total$15,689$11,660$59,554$11,966$8,009$46,926$22,245