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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Microphones & stands therefor | | | $125 | $21,494 |
| Single loudspeakers, mounted in their enclosures | $74 | $1,208 | $816 | $17,953 |
| Multiple loudspeakers, mounted in the same enclosure | $318,989 | $373,754 | $296 | $152,171 |
| Loudspeakers n.e.s. in 85.18, whether or not mounted in their enclosures | $2,222 | $185,185 | $99 | $747 |
| Headphones & earphones, whether or not combined with a microphone, & sets c ... | | | $680 | $5,527 |
| Audio-frequency elec. amplifiers | $100 | $9,358 | $924 | $337,432 |
| Electric sound amplifier sets | | $792,647 | | $3,197 |
| Total | $321,385 | $1,362,152 | $2,940 | $538,521 |
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