If we only talked about boat arrivals, we would be looking at 20% or 10%. It would vary, as some years it would be nobody. There's actually very little detail in the bill to suggest who will be designated. The capacity to designate foreign nationals is enormous. So the question is impossible to answer. Possibly you have information about how this designation power will be fleshed out that we don't have yet.
On May 7th, 2012. See this statement in context.