"less than 0.1 percent of all Android devices were using Lollipop"

I'm surprised by this figure, with the number of Nexus devices that should have auto-upgraded by now. I assume OP is basing this on "Any versions with less than 0.1% distribution are not shown" and Lollipop not being shown, but it seems more likely it hasn't been added yet.

I'm seeing ~7% usage on current installs of my app. It might be disproportionate for some reason, but it's not a new app and I can't imagine it's that skewed.