That would be a definitional matter. About 15% of Paris’s population are non-nationals. This isn’t unusual for a European capital; Dublin is 17% and Berlin is 22%, say. This would have been lower two centuries ago, though what it meant to be a national was arguably a bit different. However, what’s a ‘Frenchman’? Two centuries ago, most of France did not speak French fluently (and perhaps did not speak it at all). Even in World War I, 20% of the Metropolitan French army didn’t speak French functionally. Fluent French would certainly have been more common in Paris than elsewhere, but really you’re looking at a very weak national identity versus today.