The American Association of Publishers debuted a new monthly report in January and the news is good.

Sales of adult eBook titles rose 49.4 percent in January ($99.5 million vs $66.6m), while eBook sales in the children & young adult segment shot up 475 percent over last year ($22.6m vs $3.9m). eBooks made up 17.5% of the children trade segment, and a startling 31 percent of the adult trade segment. The trade market as a whole also grew to $503.5 million in January, up significantly from $396 million in January 2011.

The new report, dubbed Monthly StatShot, includes sales data from 1,149 publishers. This is a significant improvement over the old report, which was based on sales figures reported by just over 100 reporting companies with only a couple dozen contributing to most of the categories. On a related note, the AAP has also collected sales figures dating back at least a year for all participating publishers, which means year vs year comparisons have been kept accurate.