Here is what we can see about how many are we to play :

African Region : 8
Asia & Oceania : 32
Atlantic & Scandinavia : 100+
Balkans : 100+
Central Europe : 100+
Eastern Europe : 100+
Mediterranean EUrope : 100+
America : 100+

If I look at Asia & Oceania, there are only 32 players. Among them, only 34% have more than 1000 seats. And to be more precise, 28% have more than 1500 seats.
So, we can extrapole for other regions (to have just an idea, nothing precise) :

African Region : 8
Asia & Oceania : 32
Atlantic & Scandinavia : 294
Balkans : 357
Central Europe : 357
Eastern Europe : 294
Mediterranean EUrope : 282
America : 236

Total : 1860

What do you think about that ?