I'm planning a somewhat-overdue upgrade from 6.0.14 to 7.1.4, and I'm concerned about this note in the release notes:

Important: Note that an upgrade installation will not proceed without automatic activation or a manually activated license file. Also, license activations are limited to three activations per license file. If you have previously used all three activations prior to upgrading your production system, you must contact sales to enable additional license activations.
I think we've probably done three upgrades with our license already, but I'd like to know if there's an easy way to check the number of activations? I'd rather not find out in the middle of the upgrade that we need our license updated.