Mega kudos to FoS Nick Sherman of Pizza Rules for his bravery in both collecting this personal-pizza-consumption information and then making it public.
I say bravery because I've long thought about keeping track of my pizza consumption but personally do not want to know. Nor do I want my wife to know.
But now, you know, I'm sort of tempted to get a Daytum account myself. That's the service Sherman is using to track his pizza-eating, and it was co-founded by information-graphic designer Nicholas Felton, whose Personal Annual Report project is pretty web-famous.