Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$3,486,787$4,188,691     
Telephone answering machines$10,686,821$17,356,097$944,696$1,122,566$975,722$1,264,565$1,438,373
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$21,411,147$8,022,807     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$81,619,602$251,705,964     
Total$117,204,357$281,273,559$944,696$1,122,566$975,722$1,264,565$1,438,373