[jbcohen]

According to the American Association of Publishers, all numbers are as of May 2011.

Digital categories:

E-Book sales were $90.3 Million, growing 202.3% vs February 2010. Downloaded Audiobooks were $6.9M, an increase of 36.7%.

Trade categories:
Adult Trade categories combined (Hardcover, Paperback and Mass Market) were $156.8M, down 34.4%. Children’s/Young Adult categories combined (Hardcover and Paperback) were $58.5M, a decline of 16.1%
*Year-to-date 2011 vs YTD 2010: E-Books increased by 169.4% while all categories combined of print Trade books declined by 24.8%

Religious books:
February sales of $48.5M were an increase of 5.5%; this reflects growth as well in the category for year-to-date, up 6.1% to $93.9M.

Education categories:
Higher Education sales for YTD (January and February 2011) were $406.9M, down slightly by 5.6% vs YTD 2010. In K-12, YTD sales were $173M, declining 8.9% from 2010.

Professional/Scholarly categories:
Total sales for professional books and journals were $42.9M, a slight drop of 3.6% vs February 2010. Combined sales of University Press (hardcover and paperback) were $6.7M, falling 6% vs last year.