I don't pay a whole lot of attention to the nickels. You do have a sight MAD. I do know that in the lincoln cents, especially in the '70's they are very abundant. Rampant into the '80's even.
I don't really look at the nickels either. You can go to a bank, get 30 rolls, and by the time you search them you may have a few War nickels, a small number from the forties and fifties, and you can almost plug every hole in a Whitman's folder number two and three.
(I guess I lied). I am currently searching a brand new box of 2018 P's and for the most part there is no MAD strikes at all. I am getting a handful of really nice MS and a roll or so of a reverse interior die break. You search enough and you start to realize the common errors of the year, like the cents as I stated before.