Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$37,767$14,916     
Telephone answering machines $410,012$103,571$96,562$43,359$18,012$29,218
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$24,732$66,656     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$3,381,386$6,541,868     
Total$3,443,885$7,033,452$103,571$96,562$43,359$18,012$29,218