Drop Penalty-- Can Someone Please Refresh My Memory?

Playing in an 80s league with 5/10/20 percent drop penalties. I cannot recall, nor can I find, at what game numbers these penalties kick in. Can someone please set me straight on this? Sorry if I missed it somewhere; I can't find it!

Free agent drop penalty is games 1-41:5%, games 42-80:10%, games 81+:20%. This is found in the info/help, game rules, joining or creating a league.

Thank you!