Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$70,032$57,459     
Telephone answering machines$1,032$4,764$683$93,819$21,915$33,141$76,182
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$27,428$27,927     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$2,407,648$2,926,765     
Total$2,506,140$3,016,915$683$93,819$21,915$33,141$76,182