As a German, I won't say "doesn't exist" because it's possible of course. At best, people would think it some term from legalese. The opposite thing though, "r

As a German, I won't say "doesn't exist" because it's possible of course. At best, people would think it some term from legalese. The opposite thing though, "really roughly approximately (and couldn't care less how precise)" (you get what I mean) is often colloquially used in German, under the term "Pi times Thumb" (Pi mal Daumen). So yes you can say "250tsd anno 1988 sind pi mal daumen 600tsd heutzutage".