SPARC has released "SPARC Releases Connect OER Annual Report for 2018-2019."
Here's an excerpt:
This year's report examines the current state of OER activities featuring data from 132 institutions in the U.S. and Canada. Our intent is that these insights will help inform SPARC members, open education advocates, and the library community about current trends, best practices, and the collective impact being achieved through OER at participating institutions. Click here to download the report.