Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$354,688$143,498     
Telephone answering machines$1,415,217$5,890,851$268,607$14,079$156,925$76,225$28,630
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$48,453$97,287     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$20,016,831$24,564,602     
Total$21,835,189$30,696,238$268,607$14,079$156,925$76,225$28,630