Commodity200520062007200820102011
Dictating machines not capable of op. without an ext. source of power$21,710$23,650    
Telephone answering machines$873$13,662$4,870$1,348$119$801
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$250,889$120,783    
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$1,527,431$1,759,304    
Total$1,800,903$1,917,399$4,870$1,348$119$801