Taken from the UKSG Article 10th October 2017, Self-Publishing Isbn’s

Since 2011, International Standard Book Numbers (ISBNs) for self-published titles have climbed 218.33%, according to the latest report, ‘Self-Publishing in the United States, 2011-2016’, from ProQuest affiliate Bowker. A total of 786,935 ISBNs were assigned to self-published titles in 2016; in 2011, that number was 247,210.

This new study from Bowker highlights the latest self-publishing trends in print and e-book formats. For 2016 vs 2015, the numbers indicate a continuing growth trend for print (+11%), though at a slower rate than a year ago (+34%). E-books show a slight decline in the number of title registrations (-3%), but this is a significantly smaller decrease than the prior year (-11%).

The report also indicates that the self-publishing industry is dominated by three service providers (of which Lulu is ranked in the top three) which, combined, account for over 84% of all print and e-book titles published last year.