Adult
nonfiction unit sales increased 2 % over the first half of 2016, while adult fiction sales rose just under 1 %.
Not exact matches
However, some categories were stronger in 2013 than the previous year:
unit sales increased by 5.57 % for juvenile
nonfiction and 21.91 % for biography and autobiography.
Ebooks have a much smaller share of the adult
nonfiction market, 12 %, but
sales in the segment rose 3 % last year, to 38 million
unit.»