In a relatively short period of time, the stock lost half its value and languished for years.

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In the first half of 2004 (the latest period for which figures are available) the value of sales fell by 1.3% compared with the first six months of 2003, according to the IFPI, a recording industry body, largely thanks to piracy.

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The value of digital fiction sales in the first half of 2012 was up 188% on the same period in 2011.

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