What to read next: Coffee table books are the latest in pop culture trends, and they’re no longer limited to children’s books, they’re now the most popular category of books in bookstores.
According to a new report from BookScan, booksellers have been reporting a steady increase in coffee table book sales for the past two years, with a total of 3.8 million booksellings last year.
In fact, bookstores sold nearly 6.4 million coffee table titles, up from 2.5 million in 2016.
BookScan’s study, which is based on data from Nielsen Bookscan, found that while coffee table sales have steadily grown, the category is now experiencing a slowdown as consumers shift to digital and e-book formats.
“The coffee table boom may be over, but the coffee table is not,” said Dan Schulman, president of Nielsen BookScan.
“As our industry continues to grow, we’re seeing the coffee tables continue to be a strong performer.”
While coffee table has a long history, the rise of digital publishing and ebooks has made it an increasingly popular format for the books in our bookstore.
And the trend continues with the trend to the right: Amazon is now the largest bookseller of the coffee Table category, according to BookScan data.
Amazon’s coffee table ebook business is estimated to be worth $2.4 billion, according the study.
Apple and Amazon, the two biggest publishers in the category, are also among the top 10 publishers in terms of book sales, while Google has a number of top-selling coffee table series, including The Book of the Month Club and The Book Club.
“It’s clear that the coffeetable book market is going to be one of the most successful in history, with coffee table being one of its biggest drivers,” said Michael Siegel, CEO of Nielsen Books, in a press release.
“While the coffeehouse book is popular with families and students, it’s increasingly becoming popular among adults and is on the rise with kids.
The next generation of coffee table authors and retailers is going take their coffee tables to the next level.”
While there’s no word yet on when Amazon will begin offering a range of coffeetable books in its digital stores, Schulmen said the company has been working with some of the industry’s most respected coffeehouse authors to see if they could help bring the book back to print.
“Amazon is one of our biggest customers for coffee table,” Schulmans said.
“They have a great reputation, and there are a lot of great authors that want to publish with us.”
For more on the coffee tree, see the latest issue of Fortune magazine.