As a comparison, there was a similar thread five years ago here: Average pub ratings.

Now being stuck on exactly 6000 for the time being, my ratings graph (with an average score of 6.40) looks like this:
Click image for larger version. 

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Looking back at the previous thread, I created this similar graph at the 3000 mark (with a remarkably similar average of 6.38):
Click image for larger version. 

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Not sure what this proves, though!