Book sales in 2010 were 5.6 percent higher than they were in 2008, a new survey says.

Publishers sold 2.57 billion books in all formats in 2010.

“We’re seeing a resurgence, and we’re seeing it across all markets — trade, academic, professional,” Tina Jordan, the vice president of the Association of American Publishers, told the NY Times.

Growth has been good in higher ed, kids/YA books, and ebooks–which went from making up just .6 percent of the trade market in 2008 to 6.4 percent in 2010; in other words, ebooks have grown their market share by more than a factor of ten.

However, it ain’t all roses. Sales of mass-market paperbacks fell 16 percent since 2008 and sales of adult hardcovers and paperbacks were relatively flat. The survey looked at not just trade books but K-12 textbooks, higher education, professional, and scholarly books—those four categories did grow, but they’re not the type of book you’re as likely to see on the shelf at Barnes & Noble.

So this not necessarily good news for the aspiring mass-market, printed book author. But if you’re willing to consider digital (and why shouldn’t you at this stage) the future may be bright.