Books are steadily increasing in size, according to a survey that has found the average number of pages has grown by 25% over the last 15 years.
A study of more than 2,500 books appearing on New York Times bestseller and notable books lists and Google's annual survey of the most discussed books reveals that the average length has increased from 320 pages in 1999 to 400 pages in 2014.
According to James Finlayson from Vervesearch, who carried out the survey for the interactive publisher Flipsnack, there's a "relatively consistent pattern of growth year on year" that has added approximately 80 pages to the average size of the books surveyed since 1999.