If
http://www2.crypto-expert.com/primecoin/ is to be trusted, a little while ago there were 44 connections mining and 20500 XPM already released.
If most of us are getting 1 or 2 rewards at 20XPM per reward... we can estimate we have mined 2640 XPM (estimate based on 3 rewards per connection).
so... Where did all the other rewards go? Pre-Mining by the creator(s)?
24207.8
Track this number and determine the hourly/daily inflation rate.
If the average person on this thread gets 20/40 XPM a day then we could estimate a total amount of coins that could exist after 24 hours of mining.
24207.8 coins would be impossible if only the known people who posted in this thread are mining. They would have to be insta-mining with cloud instances, Amazon E2, etc. I highly doubt SunnyKing would pre-mine but if 24,207 is correct then it's possible that at least 1000 people received 24 coins making the number very possible over 24 hours.
It would mean around 1000 coins are generated per hour. This fits with the block size. But I don't know, let's give it a few days.