Somewhere around a thousand a day (which is extremely low), with spikes way beyond that. I assume that they have difficulty finding relays, as the Firewall would be very updatable. For comparison, the daily connections for Australia and the US are over 4000 and 70000 respectively. You'd assume that the only ones being able to use the onion router at the moment are those that could find bridge relays with the obfuscation proxy enabled.

The TOR project has lots of neat graphs, broken down on a country basis:

https://metrics.torproject.org/users.html?graph=direct-users...