Meh, I dunno about movies per decade but I want to shout out one of my favorite Werewolf movies: Dog Soldiers.

A bunch of British army grunts heading into the Scottish highlands for some sort of training exercise end up squaring off against a whole pack of werewolves while holed up in a farmhouse. It goes about as poorly as you might expect but it's rather well executed and understands the importance of the element of mystery when doing creature horror. I've gone back and rewatched it a few times and I think it has finally displaced Ginger Snaps as my favorite werewolf film.