Commodity200520062007200820092011
Dictating machines not capable of op. without an ext. source of power$3,803,990$71$1,091$408$3,120 
Telephone answering machines$839$11,580$727$680$6,429$340
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$23,186$11,152$27,511$46,395$19,061 
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$17,661$12,292$19,391$12,188$7,745 
Total$3,845,676$35,095$48,720$59,671$36,355$340