Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$2,306,412$1,426,370     
Telephone answering machines$1,119,623$1,877,472$861,773$4,335,396$327,767$230,206$149,192
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$1,338,919$4,062,069     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$573,536,336$614,060,139     
Total$578,301,290$621,426,050$861,773$4,335,396$327,767$230,206$149,192