Commodity200520062007200820092010
Dictating machines not capable of op. without an ext. source of power$343,903$234,916$303,409   
Telephone answering machines$11,561$47,708$101,162$85,928$45,781$51,340
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$64,378$24,332$108,927   
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$837,341$1,484,018$860,883   
Total$1,257,183$1,790,974$1,374,381$85,928$45,781$51,340