64: Percentage of all publishers now publishing e-books
74: Percentage of trade publishers publishing e-books
66: Of trade houses producing e-books, percentage that are publishing them in addition to print books
12: Of trade houses producing e-books, percentage that are publishing them in place of print books
42: Percentage of publishers that cited a new revenue stream as the main driver for entering e-book market
10: Percentage of publishers that cited announcements from competitors as the main driver for entering the e-book market
15: Percentage of trade houses that said the ROI on e-books was better than print books
13: Percentage of trade houses that said the ROI on e-books was worse than print books
40: Percentage of trade houses that said they didn't know if ROI on e-books was better or worse than print books
45: Percentage of publishers that cited device/content format and compatibility problems as the current biggest challenge to developing e-books
21: Percentage of publishers that cited device/content format and compatibility problems as the biggest challenge to developing e-books in 2009
68: Percentage of trade publishing employees who read e-books
Source: Aptara