Unity version usage (might be useful for package devs)

So I looked at unity editor usage (from analytics). Thought that might be useful in deciding which unity versions to support in your AS packages. Here's data from last month (2014 December), excluding sessions from beta versions (which would be around 7% of total usage, and mostly 5.0 betas right now).

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Here's older data from 2014 September:
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Here's older data from 2014 May:
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