Commodity20052006200720082009
Dictating machines not capable of op. without an ext. source of power$115$82 $33 
Telephone answering machines$624$775$1,022 $303
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$428$5,538$60,986$12,676$10,317
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$7,570$127,380$7,166$95,960$13,863
Total$8,737$133,775$69,174$108,669$24,483