It seems extras is on fire. I tried to check extras download count regularly for the last few days, to catch when it hits 20 million, and now it suddenly jumped to
20 899 827
You can stare at the statistics at maemo.org download page.
This is also a reminder that you should really move your application to proper extras, instead of letting it gather dust at extras-devel. You might be surprised how quickly you can score downloads by having the application in extras; it appears quite a few Maemo users actually follow the recommendation not to enable extras-devel unless they know what they are doing.