Give it up for 200,000,000!
Seriously where do they get these numbers, I'd think it was satire if it wasn't from world
[Linky]
It keeps going up because they count all the "unborn children" that would have descended from the Nazis killed by communism (and then their children, grandchildren, etc.). The further away we get from the actual deaths, the more quickly the number will go up, because it's counting larger and larger counterfactual future generations.