Ebooks made up 23 percent of US publisher sales in 2012, says the AAP

Ebooks accounted for nearly a quarter of the U.S. trade book business in 2012, according to statistics released Thursday by the Association of American Publishers. The ebook industry appears to be maturing, however, and triple-digit growth is likely a thing of the past.

Ebook sales way up in 2011; overall trade book sales roughly flat

Print books still dominate, but a new report reveals that in 2011, ebooks made up 15 percent of all trade book sales. In addition, digital is now the most popular format for adult fiction. Despite the massive growth of digital, though, bricks-and-mortar stores are still the largest sales channel for publishers.