According to Association of American Publishers (AAP) sales figures, eBook net sales increased by 115.8 percent, up from $32.4 million to $69.9 million.
At the same time both adult mass market paperbacks and hardcovers lost sales. GalleyCat has more about those declines.
We’ve embedded the complete release below. Here’s more from the report: “As AAP reported last month http://tiny.cc/obolv in its December 2010 monthly report and full 2010 analysis, E-book sales have increased annually and significantly in all nine years of tracking the category.”