Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$3,805$4,310$539    
Telephone answering machines$27,122$32,029$85,144$10,675$6,312$11,709$49,354
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$235,574$194,255$2,661    
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$911,031$2,525,064$209,210    
Total$1,177,532$2,755,658$297,554$10,675$6,312$11,709$49,354