Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$649,524$1,266,444     
Telephone answering machines$42,685$15,344$483,554$836,073$641,261$266,940$273,468
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$1,033,802$1,115,988     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$8,408,579$8,471,323     
Total$10,134,590$10,869,099$483,554$836,073$641,261$266,940$273,468