Bowker Data
Based on analysis of its extensive data resources, Bowker provides free annual publishing trend reports such as the annual ISBN Output Report and self-publishing statistics summary.
Download the full statistics reports here:
Bowker Data
Self Publishing Reports
Self Publishing Publication Counts Report for 2013-2018
Self Publishing Publication Counts Report for 2008-2013
Self Publishing Publication Counts Report for 2007-2012
ISBN Annual Output Reports
ISBNOutput Report for 2002-2013
ISBNOutput Report for 2002-2012