Earlier this year, Nielsen (NLSN) SoundScan reported that overall U.S. music sales were down 2.4% in 2010.

今年早些时候，尼尔森唱片市场调查公司(Nielsen SoundScan)称，2010年，美国音乐销量总体下滑了2.4%。

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Jackson currently occupies the top nine spots on the SoundScan catalog chart, which tracks albums released more than two years ago.

杰克逊目前占据了SoundScan分类排行榜中的前九个。 该排行榜跟踪推出时间在两年以上的专辑。

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In America, according to Nielsen SoundScan, the volume of physical albums sold dropped by 19% in 2007 from the year before-faster than anyone had expected.

根据及尔森咨询公司的调查，在美国2007年一年固体唱片的销量与去年同期相比下降19%，下降幅度远远超过众人的预期。

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The retail value of those albums is unclear, since SoundScan measures only units sold.

WSJ: Music and Concerts Rings Up Higher Sales

All told, Underwood has sold 9.6 million albums and 10.7 million digital downloads, according to Nielsen Soundscan.

FORBES: Magazine Article

Compact disc sales fell 3% last year, and are down 8% so far this year, according to SoundScan.

FORBES: Can The Album Survive Digital Music?