Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$7,215$99,104     
Telephone answering machines$1,640,609$1,862,245$809,332$8,161$1,918$7,496$491,392
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$536,723$356,240     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$32,257,026$46,226,341     
Total$34,441,573$48,543,930$809,332$8,161$1,918$7,496$491,392