Commodity200520062007200820092010
Dictating machines not capable of op. without an ext. source of power   $36$3,438$679
Telephone answering machines$659$24$1,086$3,003$4,712$150
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$8,329$5,949$11,074$14,555$24,682$22,927
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$45,373$54,672$71,005$49,109$108,306$119,050
Total$54,361$60,645$83,165$66,703$141,138$142,806