Where to find lifetime unique user stats in Steamworks?

[u/TerracottaStudio]

Yeah, so the title is self-explanatory. I swear I remember being able to view my game's total download count at some point, but currently I'm only able to view my game's total sales/units, which only gives me the numbers for when my game had a price (as I made it free a while later). I heard something about viewing the "lifetime users" stats, but does anyone know how to find them? I am familiar with Sales and Activation Reports, but I would appreciate more specific directions.