"By way of comparison, the latest phenomenon in the book trade, Fifty Shades of Grey, sold 664, 000 in its highest week of sales so far, " said David Walter from Nielsen BookScan, which has been monitoring book sales in the UK since 1998.

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"The accessibility of music has seen tremendous expansion and diversification, " said David Bakula, a Nielsen senior vice president.

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Nielsen, who famously sent off David Beckham for England against Argentina at the World Cup seven years ago, insists Rooney will not get special treatment if they meet again.

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