Have a chart for only ipv4?
Discussion
IIRC bitnodes has network based breakdowns
I don't see knots on https://bitnodes.io/dashboard/1y/
Nodes on .onion vs. IP:
.onion grew 26% while IP grew 13%.
Yeah IIRC you have to cross corrolate it with the node version chart. Or you can do a search for knots and count manually by seeing how many pages in the list are Tor nodes.