BookStats: book sales in the US has not increased
Fresh statistics from BookStats shows that book sales in the US in 2013 remained on the same level.

The total volume of realization of books in the U.S. in 2013, remained at the same level, a decline not more than 1%: from $27, 12 billion in 2012 and $27, 01. Statistics BookStats based on information from the American Association of publishers and research group Book Industry. Information was gathered from more than a thousand organizations, and then emerged from the market as a whole.
Sales in the segment of books for a wide audience (trade books) fell by 2, 3% to
$14, 63 billion. at the same time, in the other three major segments Sales increased. So, sales of scientific and professional literature were by 1, 3% higher
than in 2012, and the Magnitude of the implementation of literature for universities increased by 1, 1% to $4, 34 billion. Sale of literature for children of preschool and school age has increased by 3, 4% to $4, 41 billion.
As for the segment of trade books, inside sales growth was observed only in the category of non-fiction literature for adults: 5, 4% to $4, 65 billion.
Sale of literature for adults in 2013 showed a much more modest results due to low demand trilogy