You are correct. We did have to close our embassy. We do have some local staff housed in the British embassy, mainly on consular issues.
I can't say how many Canadian citizens reside in Venezuela. They would most likely be almost exclusively dual citizens, and as you know we don't keep such statistics. We do rely on Canadians registering in our ROCA system of residents abroad. Those numbers are virtually zero.
There were some Canadians who were in Venezuela this time last year and needed to be evacuated. As far as we know, all who wanted to depart have departed, but in terms of Canadians still residing we would not have those numbers.