I think they usually post the full list of countries only after the con.
I'm sure it'd be fairly easy to extract that data "right now".
Something that'd be interesting would be to see a comparison of the data registered and the actual figures, once the con has been. I'd also love to see, maybe per country/gender/flavour/$foo how many ppl have been to the con "first time", twice, thrice, ... 16 times. I.e. recurring visitors. Mmm, statistics.