How many books have ever been published in all of modern history?
The biggest number of books is published per year in China, United States, and the United Kingdom.
Each year a huge number of new book titles are written and published. According to Stephen Hawking in his recent book Brief Answers to the Big Questions, he states that “if you stacked the new books being published next to each other, at the present rate of production you would have to move at ninety miles an hour just to keep up with the end of the line.”
UNESCO (United Nations Educational, Scientific and Cultural Organization) keeps track of books published by country. It estimates that 2.2 million new titles are published worldwide each year.
How many books have been published since the printing press was invented in 1440?
According to Google, more than 130 million unique titles!
In the U.S. total books sold is about 840 million unit sales, with about 20% being e-books and 80% being print books.
A huge area of growth has been the “self-publishing” industry. Self-publishing means that that author mainly uses his/her own resources to publish the book without use of an established publishing house.
Source: https://www.theifod.com/how-many-new-books-are-published-each-year-and-other-related-books-facts/