Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$946,871$10,101     
Telephone answering machines$118,483$839,088$2,554,699$173,402$144,617$109,051$303,191
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$183,539$59,771     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$2,912,297$8,182,416     
Total$4,161,190$9,091,376$2,554,699$173,402$144,617$109,051$303,191