In the US, ISBNs for self-published books have grown eight percent from 2015-2016, according to a new report from ProQuest affiliate Bowker.
In total, 786,935 ISBNs were assigned to self-published titles in 2016, up from 727,125 in 2015 and 599,721 in 2014.
ISBNs for self-published print books were up 11% in 2015-2016 after a 34% growth in 2014-2015, while ISBNs for self-published ebooks declined by 3% in 2015-2016 after a 11% decline in 2014-2015.
‘Overall, we believe that these numbers point toward an ongoing maturation and stabilisation of the self-publishing industry,’ said Beat Barblan, director of Identifier Services at Bowker.
The report reveals that the self-publishing market is dominated by three service providers—Amazon’s CreateSpace, Smashwords and Lulu—which accounted for over 84% of all self-published print and ebook ISBNs assigned last year.
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