Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$2,066$55,915$169    
Telephone answering machines$2,817$428$110$5,696$9,867$522$343
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$29,050$100,289$52,277    
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$232,966$171,876$165,195    
Total$266,899$328,508$217,751$5,696$9,867$522$343