The Association of American Publishers publishes monthly sales revenue estimates based on figures supplied by participating publishers. This report – now called the Monthly StatShot – has now expanded to embrace new categories, including e-book data for children’s and young adult books. With 21 companies reporting figures for kids’ titles, the electronic format showed a huge increase of 475.1% in January 2012 (over the same period in 2011), likely fueled by the expanded availability of devices aimed at this demographic, as well as the continued popularity of series such as the Hunger Games. Hardcovers and paperbacks also fared well, with gains of 68.9% and 61.9% respectively.