From the front page of The Oz: Sri Lankan asylum-seeker bid turns back time. They must have been reading the polling figures before the election. The stats which come with the story notes that in the last two years of R-G-R, there were 17,204 and 20,587 arrivals by sea. In the first year of ATM, the number fell to 160. From the story:
Yesterday’s returns bring to 186 the number of men, women and children from 10 people-smuggling ventures who have been returned to Sri Lanka since the Coalition came to power in September 2013. More than 50,000 asylum-seekers came to Australia by boat under the previous Labor government and an estimated 1200 drowned trying over that six-year period.
There is then this comment accompanying the story on People smugglers which includes this, almost as a throw-away.
Another boat was reported to have left India in March. It was never seen again and is assumed lost at sea.
There are many reasons to stop the flow. As a separate matter, the notion that large-scale migration is good for the economy is utterly untrue.