Commodity2005200620072008200920102011
Objective lenses for cameras/projectors/photog. enlargers/reducers, of any ...$28,362 $1,954$273$1,560$896 
Objective lenses (excl. of 9002.11), of any mat., mounted$959$307$1,020  $5,474$318
Filters (i.e., optical elements), of any mat., mounted$1,669$187$3,460$286$565 $1,992
Lenses, prisms, mirrors & oth.optical elements, of any mat., mounted, being ...$843$4,765$15,758$2,792 $1,589$962
Total$31,833$5,259$22,192$3,351$2,125$7,959$3,272