". . . Electronic book sales are growing quickly. The European Federation of Publishers, an industry group based in Brussels, estimated that e-book sales would rise 20 percent or more this year from an estimated €350 million, or $462 million, in 2010.
"Sales of printed books, which account for more than 98 percent of all book purchases, are stagnating. Sales of all books reached €23.5 billion last year, down 2 percent after adjusting for currency fluctuations, from their level in 2007."
"In 2010, U.S. e-book sales rose to $878 million, or 6.4 percent of the trade book market, according to BookStats, an annual survey of the Association of American Publishers and the Book Industry Study Group. In adult fiction, e-books accounted for 13.6 percent of all revenue in 2010, the group said" (http://www.nytimes.com/2011/12/02/technology/eu-e-book-sales-hampered-by-tax-structure.html?_r=1&hpw, accessed 12-02-2011).