The data describes data on the change in books sales in the U.S. in 2015 versus 2014, broken down by category. Largest negative growth was reported for the higher education materials category - the sales contracted by 7.2% over the presented period.
Other | 4.4 |
Adult | 2.2 |
Religious presses | 1.2 |
Professional books | -0.8 |
Total | -2.6 |
University presses | -3.1 |
Children's/young adult | -3.2 |
K-12 instruction materials | -4.1 |
Higher education materials | -7.2 |