Timeline of acquisition multiples

March 26, 2020
by a searcher from Harvard University - Harvard Business School in New York, NY, USA
Has anyone come across a timeline of average ebitda multiples of acquisitions by year (or preferably by month) for small businesses? Basically trying to see how badly multiples compress in recessions versus expansions. Thank you!
from IESE Business School in Los Angeles, CA, USA
https://www.bizbuysell.com/news/insight-interactive
https://bschool.pepperdine.edu/institutes-centers/centers/applied-research/research/pcmsurvey/
from The University of Chicago in Chicago, IL, USA
https://www.bvresources.com/blogs/bvwire-news/2019/01/03/ebitda-multiples-by-industry-new-statistics-on-private-company-selling-prices