"the idea being that apocalyptic fiction is an extrapolation toward possible tomorrows -- an inversion of Candide's "best of all possible worlds" -- thinking of those tourist photo-ops with the cutout faces, envisioning yourself in a dystopian future...."
On a more practical note, here is the compiled list of Hugo winners that I ripped off from YouShouldaMarriedMe.com. The list runs from 1953-2010. I believe Richardo is compiling another list of Nebula winners and then cross-referencing the two.