Commodity200920102011
Urea, whether or not in aqueous solution$223$961$225
Double salts & mixts. of ammonium sulphate & ammonium nitrate $195 
Mixtures of urea & ammonium nitrate in aqueous/ammoniacal solution $18$18
Nitrogenous min./chem. fertilisers (excl. of 3102.10-3102.80), incl. mixts. ...$177 $9,511
Total$400$1,174$9,754