I think the number for Imperials is ok, as Skyrim is a part of the Empire and some Imperials would feel like living somewhere new.

I agree the Breton number seems high. I don't know of a good reason for them to be there either, other than traditionally Breton females were the cutest. Unfortunately more Skyrim women look like old hags.

Here should have been at least one of each race I agree. I guess they figure the only Khajitts and Bosmers in Skyrim are those that are traders or hunters, not settlers.