|
| Commodity | 2005 | 2006 | 2007 | 2011 |
| Dictating machines not capable of op. without an ext. source of power | $500 | $5,600 | $11,300 | |
| Telephone answering machines | | $200 | | $1,100 |
| Magnetic tape recorders incorp. sound repr. app., n.e.s. in 85.20 | $6,900 | $12,700 | $11,600 | |
| Sound recording app., whether or not incorp. a sound repr. device, n.e.s. i ... | $61,600 | $231,800 | $327,700 | |
| Total | $69,000 | $250,300 | $350,600 | $1,100 |
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