Commodity200520062007200820102011
Dictating machines not capable of op. without an ext. source of power$12,893$2,879$297   
Telephone answering machines$23,398$737$543$65$114$778
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$418,004$70,154$31,557   
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$102,952$389,416$94,382   
Total$557,247$463,186$126,779$65$114$778