It's the 2013-2014 report. That's pretty fresh data. If you've got a more recent one please feel free to post it.Dated by several years. Every 20 years SIA does (or did prior to restructuring) a much more comprehensive study that is more along the lines of a market segmentation study. This is not the mack daddy report.
This is more than mack daddy enough to have answered my questions..
https://www.crescentskicouncil.org/2013FallConfPresentations/7-2013 Participation Study_Full Version with Appendices.pdf