RPM, this is for NFl but I think the half point over the last 10 years is worth something like 2.5%. The # I think is lower if you exclude 3. I can not remember what its worth on 3 maybe between 4% and 5%. Now if you get a whole point off 3, meaning -2.5 , +3.5 I think the #3 hits around 7 % which is why over the long term it is considered a profitable middle. Please don't take these % as the Truth, but I am pretty sure their close.