There are several places where we assume the Community User's creation date is when the site was created - one of those places is on the /users list page for the "all" filters.
For whatever reason*, Community's creation date was incorrect, having a value of 2010-11-10, instead of 2009-09-28, or when Anton's user was created. This would result in over a year of your votes not being aggregated.
I've updated Community to have the proper date, so everything should be fixed.
* I think it's because the old SE1.0 codebase didn't use this date for anything, so it wasn't imperative for it to be correct.