There have been more than 30 million chapter downloads across the entire open access books portfolio published by Springer Nature since we started tracking downloads from SpringerLink in 2013.
This includes data for 512 OA books, which works to an average of 58,704 chapter downloads per book.
There are various points to consider, when discussing usage statistics:
• These books were published over a period of time
• Books vary in length depending on book type
• The average number of downloads can vary considerably by discipline.