How do I download Quickbooks Desktop for Mac 2016 R5? I am running Yosemite (10.10.5) and every release from R6 forward requires El Capitan (10.11).

I just purchased the upgrade from Quickbooks Desktop for Mac 2014 because of the planned obsolescence built-into the product, but I am still running Yosemite. The version offered to download is the latest revision (R14) but apparently to run under Yosemite, I have to run R5 or earlier.

How can I get a previous version?