[Haskell-cafe] How to estimate number of downloads of GHC or Haskell Platform?

[Norman Ramsey]

For a review, I'm trying to get a rough estimate of how many times GHC
or the Haskell Platform have been downloaded.  Although I'm sure I've
seen this information graphed over time at workshops, my web-search
skills are not turning up anything.  I'd be quite happy to get an
estimate to within a factor of ten.

Can anyone suggest any sources, or a good way to estimate this number?


Norman