Commodity2005200620072008200920102011
Dictating machines not capable of op. without an ext. source of power$1,192,695$1,128,317     
Telephone answering machines$925,662$578,956$316,889$77,394$36,271$44,890$22,848
Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20$107,991$321,508     
Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ...$63,049,924$47,593,770     
Total$65,276,272$49,622,551$316,889$77,394$36,271$44,890$22,848